Search results “4 what is cosmic background radiation ripples”
Cosmic Ripples
Ripples in the Cosmic Microwave Background can be compared to the ripples in fluids. The dispersed gas of the early universe has unique behaviors based upon its composition. The composition and the behavior of the inflation event generates a distinctive pattern of ripples. This pattern is detectable in the image we see in the Cosmic Microwave Background. credit: NASA / WMAP Science Team source: http://map.gsfc.nasa.gov/media/030658/index.html
Views: 318 djxatlanta
Ripples From The Big Bang: Listening to the Beginning of Time
In March, a major breakthrough in understanding the origin of universe took the scientific community–and the general public–by storm. A team lead by astronomer John Kovac, using a powerful telescope at the South Pole, reported evidence of ripples in the fabric of space time produced by the big bang, a long-sought prediction of our most refined approach to cosmology, the inflationary theory. Amidst the worldwide celebration, though, some have been quietly suggesting that the champagne has been uncorked prematurely. Join a singular conversation, among the world’s most respected pioneers in cosmological theory and observation, that will explore the state of the art in the ongoing quest to understand the beginning of the universe. This program is part of the Big Ideas Series Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest Original Program Date: May 30, 2014 Host: Brian Greene Participants: Andrei Linde, Alan Guth, Amber Miller, John Kovac, Paul Steinhardt Brian Greene's Introduction. 00:12 Participant Introductions. 20:34 Can we confirm that there are ripples in the fabric of space? 22:19 What did you find with BICEP2? 26:05 What is the inflationary theory? 31:46 What is making the universe accelerate? 37:33 What were the main issues with the inflationary theory? 44:42 What is chaotic inflation? 51:22 How do we calculate density motivations? 59:00 Looking for cosmic fluctuation. 1:03:40 How close were the predictions to the observations? 1:09:03 How confident are you that the swirls are coming from quantum fluctuations? 1:14:40 What are the concerns about the inflationary theory? 1:23:49 Final thoughts. 1:29:33
Views: 180981 World Science Festival
Cosmic Ripples
Ripples in the Cosmic Microwave Background can be compared to the ripples in fluids. The dispersed gas of the early universe has unique behaviors based upon its composition. The composition and the behavior of the inflation event generates a distinctive pattern of ripples. This pattern is detectable in the image we see in the Cosmic Microwave Background. Credit: NASA / WMAP Science Team
Views: 115 audiocreedvideos
Gravitational Wave Discovery! Evidence of Cosmic Inflation
Baby photos of our universe show huge early growth spurt! Check out Audible: http://bit.ly/AudibleVe Regression to the Mean: http://bit.ly/1lgZQAQ Some clarifications: - The lengthening of wavelengths is not strictly due to stretching by the expanding universe but by the way the photons were emitted and absorbed in different frames of reference. - The effects of gravitational waves have been observed in the decaying orbital periods of some binary star systems, however detectors built to measure gravitational waves stretching and squeezing matter on Earth have not as yet detected them. - In the video I sometimes use the term Big Bang to refer to the beginning of time as we know it. The Big Bang actually refers to the whole process from the formation of our universe, through inflation, to the expanding mass of plasma in the early universe (not just the first instant). - Quantum gravity is by no means established by this observation but it is suggestive that General Relativity and Quantum Mechanics are working together here. Thank you to Professor Geraint Lewis and Henry Reich for comments on earlier drafts of this video (even if I haven't accepted all of your corrections).
Views: 746406 Veritasium
The Uncertainty Over Gravitational Waves
In this clip from the 2014 World Science Festival program "Ripples from the Big Bang: Listening to the Beginning of Time," BICEP2 researcher John Kovac explains the limits of his team's discovery, published last March, of a polarization pattern in the cosmic microwave background radiation. The team thought the pattern was a sign of gravitational ripples in space-time—and consequently, evidence for the theory of cosmic inflation. But now new data from the Planck satellite suggests that pattern was almost entirely due to dust in the Milky Way. Watch the Full Program Here: https://youtu.be/70Y1Dri0umI Original Program Date: May 30, 2014 Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest
Deflating the Theory of Cosmic Inflation | Space News
The EU2017 Conference: Future Science -- Aug 17 - 20, Phoenix Rebroadcast—only $29: https://www.electricuniverse.live In the 20th century, the story of our Universe's origins was a shifting and incredibly strange tale. Around 1980, the physicist Alan Guth developed the idea of cosmic inflation or the notion that physical space experienced an exponential expansion immediately after the Big Bang. But in this series, we have reported on countless discoveries that in effect falsify the foundations of the Big Bang theory. Nevertheless, it remains the dominant view in 21st-century cosmology. In this episode, Thunderbolts Picture of the Day managing editor Steve Smith offers his analysis of the current state of Big Bang cosmology, and specifically the evidence for and against cosmic inflation. Previous Space News, More Big Problems for Big Bang: https://www.youtube.com/watch?v=xUC_a-IMmGs&t=7s If you see a CC with this video, it means that subtitles are available. To find out which ones, click on the Gear Icon in the lower right area of the video box and click on “subtitles” in the drop down box. Then click on the subtitle that you would like. Don’t miss the NEW Patreon rewards for 2017 at PATREON— “Changing the world through the understanding of the Electric Universe.” https://www.patreon.com/tboltsproject Subscribe to Thunderbolts Update newsletter: http://eepurl.com/ETy41 The Thunderbolts Project Home: http://www.thunderbolts.info Essential Guide to the Electric Universe: http://www.thunderbolts.info/wp/eg-contents/ Facebook: http://www.facebook.com/thunderboltsproject Twitter: @tboltsproject Electric Universe by Wal Thornhill: http://www.holoscience.com/wp/ Electric Universe T-shirts and Gifts: http://stickmanonstone.com/ The ideas expressed in videos presented on The Thunderbolts Project YouTube Channel do not necessarily express the views of T-Bolts Group Inc or The Thunderbolts Project(TM).
Views: 47259 ThunderboltsProject
Afterglow: Dispatches from the Birth of the Universe
Cosmology is the one field in which researchers can—literally—witness the past. The cosmic background radiation, ancient light streaming toward us since the Big Bang, provides a pristine window onto the birth and evolution of the universe. Already, the radiation has been key to confirming an early explosive expansion of space, determining the geometric shape of the universe and identifying seeds that resulted in galaxies. Now, the cosmic background radiation is poised to reveal when the first stars formed, what happened in the fraction of a second after the Big Bang, and the answers to a host of other bold questions about the cosmos. Join Nobel Laureate John Mather and other leading scientists who are leading the way. The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest Original Program Date: May 31, 2012 MODERATOR: Lawrence Krauss PARTICIPANTS: John C. Mather, Amber Miller, Lyman Page, David Spergel Lawrence Krauss's Introduction 00:21 Robert Woodrow Wilson: Tuning in to the Big Bang 10:31 Participant introductions. 18:10 What lead you to the path of science? 20:45 Launching the COBE satellite. 32:45 Measuring temperatures 1/100,000 of three degrees. 36:50 When your wrong ... you move on. 41:34 The boomerang experiment from Antarctica. 46:54 How big is the universe? 52:43 How far back in time can we see? 58:54 Amber Miller and the EBEX project. 1:02:14 Polarization from gravity waves from the beginning of time. 1:06:16 What is the future of measuring the universe? 1:12:26 What is a microwave? Are we sure matter exists? 1:20:54
Views: 62868 World Science Festival
How Scientists Are Looking For Ripples In Spacetime
We are constantly searching for evidence of the Big Bang. One form of proof could be gravitational waves, but how do we go about finding them? Read some of Ian’s recent articles: http://news.discovery.com/contributors/ian-oneill.htm Follow Ian on Twitter: https://twitter.com/astroengine Read More: Dialing In To Noise http://eands.caltech.edu/2015/03/19/dialing-in-to-noise/ “In their search for gravitational waves—stretches in space-time produced by dramatically violent events in the distant universe—researchers at the Laser Interferometer Gravitational-Wave Observatory (LIGO) have created some of the most sensitive detectors in the world.” ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Julia Wilde on Twitter https://twitter.com/julia_sci DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq
Views: 94533 Seeker
How Two Astronomers Accidentally Discovered the Big Bang
Nowadays, it's a universally accepted theory that the universe began 13.8 billion years ago with the Big Bang. But did you know that two radio astronomers unintentionally stumbled upon its discovery? In the 1960s, Robert Wilson and Arno Penzias were measuring the brightness of the sky with their radio telescope. No matter where they pointed it, they picked up an inexplicable droning sound. What initially sounded like a mistake ended up being the discovery of a lifetime. SUBSCRIBE: https://goo.gl/vR6Acb Follow us behind the scenes on Instagram: http://goo.gl/2KABeX Make our acquaintance on Facebook: http://goo.gl/Vn0XIZ Give us a shout on Twitter: http://goo.gl/sY1GLY Come hang with us on Vimeo: http://goo.gl/T0OzjV Visit our world directly: http://www.greatbigstory.com This story is a part of our Frontiers series, where we bring you front and center to the dreamers, pioneers, and innovators leading society at the cutting edge. Let us take you along for a trip to the oft-imagined but rarely accomplished. Great Big Story is a video network dedicated to the untold, overlooked & flat-out amazing. Humans are capable of incredible things & we're here to tell their stories. When a rocket lands in your backyard, you get in.
Views: 88855 Great Big Story
Astronomers Discover Echoes from Expansion after Big Bang
Astronomers announce discovery many consider the holy grail of their field: ripples in the fabric of space-time that are echoes of the massive expansion of the universe that took place just after the Big Bang. Full Story: Astronomers announced on Monday (March 17) that they had discovered what many consider the holy grail of their field: ripples in the fabric of space-time that are echoes of the massive expansion of the universe that took place just after the Big Bang. Predicted by Albert Einstein nearly a century ago, the discovery of gravitational waves would be the final piece in one of the greatest achievements of the human intellect: an understanding of how the universe began and evolved into the cornucopia of galaxies and stars, nebulae and vast stretches of nearly empty space that constitute the known universe. "Detecting this signal is one of the most important goals in cosmology today," John Kovac of the Harvard-Smithsonian Center for Astrophysics, who led the research, said in a statement. Gravitational waves are feeble, primordial undulations that propagate across the cosmos at the speed of light. Astronomers have sought them for decades because they are the missing evidence for two theories. One is Einstein's general theory of relativity, published in 1915, which launched the modern era of research into the origins and evolution of the cosmos. The general theory explains gravity as the deformation of space by massive bodies. Einstein posited that space is like a flimsy blanket, with embedded stars and planets causing it to curve rather than remain flat. Those curvatures of space are not stationary, Einstein said. Instead, the gravitational waves propagate like water in a lake or seismic waves in Earth's crust. The other theory that predicted gravitational waves is called cosmic inflation. Developed in the 1980s, it posited that in less time than the blink of an eye after the Big Bang, the infant cosmos expanded exponentially, inflating in size by 100 trillion trillion times. The Big Bang is the explosion of space-time that began the universe 13.8 billion years ago. In addition to making the cosmos remarkably uniform across vast expanses of space, inflation caused everything it touched to balloon exponentially. That included tiny fluctuations in gravity that, when inflated, became gravitational waves. Although the theory of cosmic inflation received a great deal of experimental support, the failure to find the gravitational waves it predicted caused many cosmologists to hold off their endorsement. The measurements announced by the astronomers on Monday are nearly twice as large as cosmologists predicted for gravitational waves, suggesting a great deal more could be learned about how inflation worked. The gravitational waves were detected by a radio telescope called BICEP2 (Background Imaging of Cosmic Extragalactic Polarization). The instrument, which scans the sky from the South Pole, examines what is called the cosmic microwave background, the extremely weak radiation that pervades the universe. Its discovery in 1964 by astronomers at Bell Labs in New Jersey was hailed as the best evidence to date that the universe began in an immensely hot explosion. The microwave background radiation, which has been bathing the universe since 380,000 years after the Big Bang, is a mere 3 degrees above absolute zero, having cooled to near non-existence from the immeasurably hot plasma that was the universe in the first fractions of a second of its existence. The background radiation is not precisely uniform. Like light, the relic radiation is polarized as the result of interacting with electrons and atoms in space. For more news and videos visit ☛ http://ntd.tv Follow us on Twitter ☛ http://twitter.com/NTDTelevision Add us on Facebook ☛ http://on.fb.me/s5KV2C
Views: 1427 NTDTV
Teach Astronomy - Microwave Background Fluctuation
http://www.teachastronomy.com/ In 1989 the Cosmic Background Explorer satellite or COBE detected tiny fluctuations in the cosmic background radiation for the first time. Astronomers were very excited by this discovery because it had been a prediction of the big bang model that there should be fluctuations. They were at a very low level of only ten to the minus five fractionally. So the background radiation does not have exactly the same intensity or temperature in every direction in space. These fluctuations represent the seeds for galaxy formation. The microwave background is a view of the universe at an age of only three hundred thousand years after the big bang, a tiny fraction of its present age. The background fluctuations are the seeds out of which galaxies will eventually form, a process which takes billions of years. They're tiny ripples in the intensity of the background. In the analogy of a pond that's a hundred meters across the ripples would only be about a millimeter high.
Views: 159 Teach Astronomy
Astronomers Measure Small Ripples In The Cosmic Web For The First Time
Matter in the universe is distributed in a network of filaments known as the cosmic web. The biggest clusters of galaxies form nodes with dark matter and gas stretching in tendrils between them. Never miss a talk! SUBSCRIBE to The Science Channel: http://bit.ly/thesciencepodcast . Read more: http://www.sciencesonic.com . You may love:
Views: 104 The Science Channel
cosmic background radiation pt 1
Questions for homework 4 questions 1. What type of waves are the cosmic background radiation? 2. Why are the waves stretched out? 3. what temperature did Gamow predict? 4. What temperature did they discover the CBR to be?
Views: 280 Takata Science
Stanford Professor Andrei Linde celebrates physics breakthrough
Assistant Professor Chao-Lin Kuo surprises Professor Andrei Linde with evidence that supports cosmic inflation theory. The discovery, made by Kuo and his colleagues at the BICEP2 experiment, represents the first images of gravitational waves, or ripples in space-time. These waves have been described as the "first tremors of the Big Bang." Producer: Bjorn Carey Video: Kurt Hickman For more on the discovery, see: http://news.stanford.edu/news/2014/march/physics-cosmic-inflation-031714.html
Views: 3023454 Stanford
25 years studying the Big Bang’s afterglow
This week marks the 25th anniversary of a Nobel Prize winning discovery: the first image of the cosmic microwave background. This image showed the world what the universe looked like shortly after the big bang, and transformed cosmology. Reporter Davide Castelvecchi asks Nobel Laureate John Mather how the iconic image was taken, and investigates what the cosmic microwave background still has to teach us today. This is a video version of an audio package produced for the Nature Podcast and broadcast on 26 April 2017. You can listen to the full podcast here: http://www.nature.com/nature/podcast/index-2017-04-27.html
Views: 22409 nature video
Ripple seen during solar radio burst
On 18-Apr-2014, KAIRA caught a burst of radio emission from the sun. In the data from the individual Low-Band Antennas (LBAs), there is a strange ripple or wave pattern in the data. As part of our efforts to understand this effect, we've animated the plots from each of the antennas in sequence. We are hoping to see possible patterns in this sequence. As each antenna has two polarisations, we plot first the X-polarisation and the Y-polarisation. They are done separately, to avoid a strong flickering effect (which is due to the different responses to the event between the two polarisations). The "RCU" number is the Reciever Unit number. The even RCUs are for the X-polarisation and the odd ones are for the Y-polarisation. Three RCUs have been omitted (68,69, and 70) as these were offline at the time the observations were made. Links: http://www.sgo.fi/KAIRA http://kaira.sgo.fi/2014/04/spectacular-solar-radio-event.html
Views: 212 KairaProject
Why the Big Bang Definitely Happened | Space Time | PBS Digital Studios
How physics lets us rewind time to the beginning of the universe. Get your own Space Time t-shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g We pretty much know for sure that the universe was once extremely small, and extremely hot. And we know that something set it in motion, expanding rapidly and continuing to do-so today. But the actual moment of ‘the Big Bang’ is still a bit of a grey area within physics. The theories of general relativity and quantum mechanics disagree on this pivotal “beginning of time,” and physicists continue to search for an all-encompassing theory to unify the study of our universe. On this week’s Space Time, we begin to discuss the current state of the Big Bang Theory, and where it could go from here. FURTHER READING: Overview of Big Bang theory https://en.wikipedia.org/wiki/Big_Bang Timeline of the Big Bang https://en.wikipedia.org/wiki/Chronol... MinutePhysics made a truly superb video on what the Big Bang really is: https://www.youtube.com/watch?v=q3MWR... Kurzgesagt does a great job describing some of the events of the very early universe: https://www.youtube.com/watch?v=wNDGg... _____________________ COMMENTS: Brendon Binns https://www.youtube.com/watch?v=gw-i_VKd6Wo&lc=z12ivbbraz3xxdwj304citqwksadvr2pkik David Mulyk https://www.youtube.com/watch?v=gw-i_VKd6Wo&lc=z12wjbig0kq0z5gni22mgbdquvztil2ti John Proctor https://www.youtube.com/watch?v=gw-i_VKd6Wo&lc=z123yzqjqtvkxvcil04cjnjzkx3fufiisac Lawrence Stanley https://www.youtube.com/watch?v=gw-i_... ______________________ Written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com)
Views: 801337 PBS Space Time
Gravitational Waves The Big Bang's Smoking Gun | Exploring Nature
Gravitational Waves The Big Bang's Smoking Gun | Exploring Nature Gravitational Waves The Big Bang's Smoking Gun. The historic discovery of gravitational waves of September 2015 has won the Nobel Prize for Physics. Half of the prize goes to physicists Kip Thorne and Barry Barish of Caltech, with half going to Rainer Weiss for their roles in the discovery. Gravitational waves are the "smoking gun" of the Big Bang. Predicted by Albert Einstein's theory of general relativity in 1916, a massive object like Earth distorts space-time around it like a bowling ball dropped on a trampoline. The larger the object, the more space-time is distorted by it. If a marble were circling around the bowling ball on the dimpled trampoline, it would fall inward, toward the bowling ball, like a rock in space circling a planet. Gravitational waves are ripples in space-time that travel outward from a source. Scientists think that powerful gravitational waves are created when two extremely dense objects — like a pair of neutron stars or a black hole and a neutron star — orbit one another in binary pairs. The interaction of those two objects swirl space-time, creating ripples that theoretically can be measured using powerful instrumentation. 1. Background noise In 2014, the Harvard-Smithsonian Center for Astrophysics found a faint signal in the cosmic microwave background radiation (CMB). They announced that the signal signified the first direct evidence of gravitational waves ever discovered. Gravitational waves were the last untested part of Einstein's general theory of relativity. Unfortunately, the signal detected by their research could be explained by dust in the Milky Way. However, the announcement highlighted one method for spotting gravitational waves. The rapid expansion of the universe (called inflation) right after the Big Bang nearly 13.8 billion years ago could have produced ripples in the CMB — the cosmic fog that fills the universe and represents the earliest detectable radiation. If spotted in the future, such ripples would further support the idea that the universe went through a huge period of inflation a fraction of a second after the Big Bang. 2. Cosmic inflation CMB radiation came into existence about 380,000 years after the Big Bang. Scientists have mapped the CMB across the sky and found that it is a uniform temperature, evidence that bolsters cosmic inflation theory. "Why the cosmic microwave background temperature is the same at different spots in the sky would be a mystery if it was not for inflation saying, well, our whole sky came from this tiny region," Chuck Bennett, principal investigator of NASA's Wilkinson Microwave Anisotropy Probe (WMAP) mission, told Space.com in 2013. "So the idea of inflation helps answer some of these mysteries, and it explains where these fluctuations came from." 3. Smoking gun In 2016, the Advanced LIGO (Laser Interferometer Gravitational Wave Observatory) announced its first (and then its second) clear detection of gravitational waves. The discovery was met with excitement by both the general public and the scientific community. The first announcement, made in February 2016, revealed the historic confirmed detection made in September 2015. A pair of black holes, weighing in at 29 and 36 times the mass of the sun, merged into a single object, producing the ripples in space-time that LIGO detected. The September signal was the first detection of binary black holes. The LIGO team announced a second gravitational wave signal, which the pair of instruments detected on December 26, 2015. Like the first, the signal is thought to have come from a pair of colliding black holes. The crashing twin pairs are far from the largest black holes. The supermassive black hole at the center of the Milky Way weighs in at over 4 million times the mass of the sun. The intermediate mass black holes are more challenging to explain than their larger siblings. "The 29 and 30-plus solar masses come as an unusual surprise. If you look at most binary stars in [the Milky Way] galaxy, given the composition of the stars, we don't expect black holes of this mass," black hole scientist and LIGO team member Vicky Kalogera told Space.com soon after the first discovery. "The higher mass tells us that these binary black holes formed from a particular environment [with a] metallicity that is different than [the sun's] metallicity." As LIGO continues to study space-time, and as more detectors come online (such as one proposed by India), scientists will improve their understanding of intermediate black holes and black hole pairs.
Views: 33 Exploring Nature
Cosmic Background Radiation
Did you know that by using an antenna, you can hear echoes of the big bang right here on earth? Please LIKE & SUBSCRIBE if you enjoyed! http://bit.ly/1G7yMhG **More info & videos below** For full episodes, check out http://www.scitechnow.org/ Find out how two communications engineers scooped theoretical astrophysicists on one of the biggest cosmic discoveries of the twentieth century. Facebook: http://www.facebook.com/scitechnow/ Twitter: http://twitter.com/scitechnow/ Google+: https://plus.google.com/+scitechnoworgtv/ ----------------- “SciTech Now” is a new weekly, half-hour newsmagazine program focusing on “the nexus of new ideas.” Hosted by Hari Sreenivasan, anchor of “PBS NewsHour Weekend” and a senior correspondent for the nightly program, “SciTech Now” tackles topics including technology, scientific discovery and innovation. ----------------- More videos: How big is the universe? http://youtu.be/ii5mljHy5as Closing the gender gap in tech: http://youtu.be/jFlya7CFxRk How traffic lights work: http://youtu.be/GmpwWHHqSqQ Buzzworthy tech startups: http://youtu.be/QK9ZhCn5jZw Changing gaming industry: http://youtu.be/Nah1P9aZHVc
Views: 1178 SciTech Now
Background Radiation from the Big Bang
David Kaplan, producer of the new documentary film "Particle Fever," talks about how the LHC (Large Hadron Collider), potentially discovered the background radiation from the Big Bang. People use astronomy experiments to find the "background" of the sky. It looks black, but it's actually the background radiation from the Big Bang. They might have found a hint of something from very early in the universe called Cosmic Inflation. It might be something very close to the singularity of the universe. Part of the International Documentary Association's IDA Screening Series. Shot and edited by Viva Videography. Background Radiation. Cosmic Microwave Background. Big Bang. Singularity. Universe. Cosmic Inflation. Large Hadron Collider. Particle Physics. LHC. CERN. Theory.
Views: 92 VivaVideography
Alan Guth Module 6: Quantum Fluctuations
Module 6: Alan Guth -- Quantum Fluctuations Take the full class here: http://www.worldscienceu.com/courses/master_class/master-class-alan-guth Subscribe to our YouTube Channel for all the latest from World Science U. Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu MODULE 6: Quantum Fluctuations Summary It turns out that the early universe was not exactly uniform. - Had it been completely uniform, it would have stayed that way forever, and all matter would have been a bland, homogeneous "soup." - Instead, there were small variations in mass density. This led to the clumping or "clustering" of matter. - Bits of matter began to attract each other, forming bigger bits, which in turn could pull in even more matter with their gravitational forces. - Slowly, structure started to appear in the universe. We see this today in the form of galaxies and the clustering of galaxies. This led cosmologists to wonder where these variations in mass density originated from. - The inflationary picture explains this using the idea of quantum fluctuations. - This means that energy conservation can appear to be violated—but only for very small instances of time. - Quantum fluctuations appear as temporary changes in the amount of energy at a specific point. - The mass density of the early universe fluctuated on the quantum scale, having a recurring effect that produced all the clumping of matter we see today. Inflation predicts these quantum fluctuations extremely accurately. - These ripples can be analyzed like any other wave, with inflation making generic predictions for their spectrum. - We can calculate how the intensity of the ripples varies with their wavelength. - The fluctuations we measure in the cosmic background radiation agree very well with those predicted by inflation.
Views: 3011 World Science U
Gravitational Waves | John Mather | TEDxHerndon
Dr. John Mather discusses Gravitational Waves and the future of astrophysics. Dr. Mather is the recipient of numerous awards, including the Nobel Prize in Physics (2006) with George Smoot, for the COBE work, and the NASA Distinguished Service Medal (2007). He is a member of many professional societies including the National Academy of Sciences and the American Academy of Arts and Sciences. Dr. John C. Mather is a Senior Astrophysicist and is the Senior Project Scientist for the James Webb Space Telescope at NASA’s Goddard Space Flight Center in Greenbelt, MD. His research centers on infrared astronomy and cosmology. As an NRC postdoctoral fellow at NASA’s Goddard Institute for Space Studies (New York City), he led the proposal efforts for the Cosmic Background Explorer (74-76), and came to GSFC to be the Study Scientist (76-88), Project Scientist (88-98), and the Principal Investigator for the Far IR Absolute Spectrophotometer (FIRAS) on COBE. With the COBE team, he showed that the cosmic microwave background radiation has a blackbody spectrum within 50 parts per million, confirming the expanding universe model (aka the Big Bang Theory) to extraordinary accuracy, and initiating the study of cosmology as a precision science. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
Views: 20093 TEDx Talks
Cosmic Ripple Effect - The Radiant Soul - December 6, 2014
http://judithkusel.wordpress.com http://cosmicgaia.com
Views: 1550 rainbowabundance
The Original Double Slit Experiment
Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists for centuries. Is light made up of waves or particles? The experiment was conducted by Thomas Young and is known as Young's Double Slit Experiment. This famous experiment is actually a simplification of a series of experiments on light conducted by Young. In a completely darkened room, Young allowed a thin beam of sunlight to pass through an aperture on his window and onto two narrow, closely spaced openings (the double slit). This sunlight then cast a shadow onto the wall behind the apparatus. Young found that the light diffracted as it passed through the slits, and then interfered with itself, created a series of light and dark spots. Since the sunlight consists of all colours of the rainbow, these colours were also visible in the projected spots. Young concluded that light consist of waves and not particles since only waves were known to diffract and interfere in exactly the manner that light did in his experiment. The way I have always seen this experiment performed is with a laser and a manufactured double slit but since the experiment was conducted in 1801 I have always thought that it should be possible to recreate the experiment using sunlight and household materials. That is basically what I did here. I will show the interference pattern I observed with my homemade double slit on 2Veritasium but I chose to use a manufactured double slit here to ensure that the pattern was impressive for observers at the beach. Special thanks to Henry, Brady, and Rupert for their cameos, Glen for filming and Josh for helping create the apparatus. Thanks also to the Royal Society for allowing us to view the original manuscript of Young's lecture and the University of Sydney for lending the double slits. Music by Kevin Mcleod (incompetech.com) Danse Macabre, Scissors
Views: 3452022 Veritasium
Inflation Theory Part 1 - Eternal Inflation: What Caused The Big Bang
Inflation is one of the most famous, well-accepted, and relatively new cosmological theories, and it’s part of the many cosmological theories. While the big bang theory successfully explains the majority of universe’s history, it doesn’t explain what caused the bang in the first place, and that’s what the theory of inflation is trying to explain. Inflation explains the origins of the large-scale structure of the universe. It was first proposed by Alen Guth, the father of inflationary cosmology, and later developed further by others like Andrei Linde, the originator of the chaotic inflation model, Paul Steinhardt, who first proposed the eternal version of inflation, and Alexander Vilenkin, who later developed a theory of inflation both eternal to the past and future. So many inflationary theories have been developed during the last couple decades. The most successful ones are Chaotic Inflation and New Inflation. Both models have eternal nature. In such models of inflation, once inflation starts, it never stops. The result of an eternal inflation is a gigantic multiverse, containing infinite number of bubble or pocket universes. Inflation has been invented to address so many problems of the very early universe, like the absence of magnetic monopoles, flatness problem, horizon problem, and anisotropy of the cosmic microwave background radiation. These are big and serious cosmological questions that inflation handles very well, and we’ll go over them in this episode. === Sources: (Alan H. Guth) Eternal inflation and its implications https://arxiv.org/abs/hep-th/0702178 (Alexander Vilenkin) The Principle of Mediocrity https://arxiv.org/abs/1108.4990 (Alan H. Guth) Quantum Fluctuations in Cosmology and How They Lead to a Multiverse https://arxiv.org/abs/1312.7340 (Inflationary spacetimes are not past-complete) Arvind Borde, Alan H. Guth, Alexander Vilenkin https://arxiv.org/abs/gr-qc/0110012 (Alexander Vilenkin) Eternal inflation and chaotic terminology https://arxiv.org/abs/gr-qc/0409055 (Jaume Garriga, Alexander Vilenkin) Many worlds in one https://arxiv.org/pdf/gr-qc/0102010.pdf (Alexander Vilenkin) The Principle of Mediocrity https://arxiv.org/abs/1108.4990 (Tanmay Vachaspati and Mark Trodden) Causality and Cosmic Inflation https://arxiv.org/abs/gr-qc/9811037 (Andrei Linde) A brief history of the multiverse https://arxiv.org/abs/1512.01203 The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos by Brian Greene https://www.amazon.com/Hidden-Reality-Parallel-Universes-Cosmos/dp/0307278123 Embellishments on the Big Bang http://www.astronomynotes.com/cosmolgy/s12.htm (Max Tegmark) Parallel Universes https://arxiv.org/pdf/astro-ph/0302131.pdf (Andrei Linde) Inflation, Quantum Cosmology and the Anthropic Principle https://arxiv.org/abs/hep-th/0211048 === Musics: Chris Zabriskie - Cylinder Seven http://freemusicarchive.org/music/Chris_Zabriskie/2014010103336111/Chris_Zabriskie_-_Cylinders_-_07_-_Cylinder_Seven Chris Zabriskie - Wonder Circle http://freemusicarchive.org/music/Chris_Zabriskie/Divider/04_-_Wonder_Cycle Chris Zabriskie - Oxygen Garden http://freemusicarchive.org/music/Chris_Zabriskie/Divider/05_-_Oxygen_Garden Chris Zabriskie - There Are Many Different Kinds of Love http://freemusicarchive.org/music/Chris_Zabriskie/Vendaface/03_-_There_Are_Many_Different_Kinds_of_Love Chris Zabriskie - We Were Never Meant to Live Here http://freemusicarchive.org/music/Chris_Zabriskie/Music_from_Neptune_Flux/ChrisZabriskie-MusicfromNeptuneFlux-10 Chris Zabriskie - Another Version of You http://freemusicarchive.org/music/Chris_Zabriskie/Thoughtless/Chris_Zabriskie_-_Thoughtless_-_02_-_Another_Version_of_You
Views: 3860 Disculogic
Testing the Limits of Cosmology
As physicists attempt to answer some of science’s biggest questions about the universe, they are testing the limits of experimental and observational science itself. In this program leading physicists, astronomers, and astrophysicists discuss how to push the boundaries of scientific imagination to develop experiments that test the seemingly untestable theories of multiverses, eternal inflation, and exotic particles. Join the conversation about their plans to recreate the Big Bang in particle accelerators here on Earth, as well as their quest to sift through signals from the farthest edges of space for the existence of a multiverse. PARTICIPANTS: Nima Arkani-Hamed, France Córdova, Matias Zaldarriaga MODERATOR: Mario Livio FIND OUT MORE ABOUT THE PROGRAM AND PARTICIPANTS: https://www.worldsciencefestival.com/programs/answering-universes-big-questions/ This program is part of the Big Ideas Series, made possible with support from the John Templeton Foundation. Subscribe to our YouTube Channel for all the latest from WSF Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on Twitter: https://twitter.com/WorldSciFest 0:00:17 Participants Introduction 0:01:52 Mario Livio delivers a program overview and provides historical background on failures and achievements in cosmology. 0:06:39 Discussion begins. This program was filmed live at the 2017 World Science Festival and edited for YouTube
Views: 38370 World Science Festival
The Hunt for the First Neutrinos in the Universe | Cosmic Neutrino Background
The Cosmic Microwave Background shows us the oldest light in the universe, but to really understand the early universe we need something even older: The Cosmic Neutrino Background. Host: Reid Reimers For special, curated artifacts of this universe, check out https://scishowfinds.com/ ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Sam Lutfi, Nicholas Smith, D.A. Noe, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, Tim Curwick, charles george, Kevin Bealer, Chris Peters ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://iopscience.iop.org/article/10.1088/1742-6596/580/1/012040/pdf https://www.forbes.com/sites/startswithabang/2016/09/09/cosmic-neutrinos-detected-confirming-the-big-bangs-last-great-prediction/#1677c0ee30c7 https://arstechnica.com/science/2015/09/signs-of-neutrinos-from-the-dawn-of-time-less-than-a-second-after-the-big-bang/ https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.95.011305 http://www.ras.org.uk/news-and-press/89-news2005/794-ripples-in-cosmic-neutrino-background-measured-for-the-first-time https://authors.library.caltech.edu/58929/1/1.4915587.pdf https://www.energy.gov/sites/prod/files/2015/07/f24/The%20Princeton%20Tritium%20Observatory%20for%20Light%2C%20Early%20Universe%2C%20Massive%20Neutrino%20Yield%20%28PTOLEMY%29.pdf http://inspirehep.net/record/1607470/files/PoS(NOW2016)092.pdf https://www.princeton.edu/news/2016/03/14/hunt-big-bang-neutrinos-may-provide-fresh-insight-origin-universe http://s3.amazonaws.com/sf-web-assets-prod/wp-content/migration/sf/report2015/stories/ptolemy.html ------ Images: https://commons.wikimedia.org/wiki/File:Ilc_9yr_moll4096.png https://apod.nasa.gov/apod/ap130325.html https://images.nasa.gov/details-GSFC_20171208_Archive_e000125.html
Views: 93434 SciShow Space
How are Galaxies Made? - Professor Joseph Silk
How does the universe create galaxies and how can a structure of that size possibly exist?: http://www.gresham.ac.uk/professors-and-speakers/professor-joseph-silk By examining the “ripples” that have been seen in the Cosmic Microwave Background, astronomers are beginning to unpick the origins of enormous stellar structures like galaxies. The mysteries of why they form and where are slowly being unravelled Joseph Silk is a renowned cosmologist who currently holds posts at three of the world’s top Universities: John Hopkins University, Le Sorbonne and the University of Oxford. Professor Silk is one of the world’s leading experts in theoretical cosmology, dark matter, galaxy formation and cosmic microwave background. Professor Silk’s studies of galaxy formation and his work on the dynamics of mass loss and the feedback mechanisms from star formation and evolution formed a highly significant basis for subsequent work in this important field. In 2011 he won the Balzan Prize for this pioneering work on the infant universe. You can find out more about Professor Silk by visiting his Professor page: http://www.gresham.ac.uk/professors-and-speakers/professor-joseph-silk Professor Silk's inaugural series for Gresham College is titled 'The Biggest Questions in the Universe'. In six lectures, Professor Silk will examine the earliest moments of the Universe; discuss the first stars and the future of the field as 'galactic archaeology' expands our understanding of the Universe. You can see all of the lectures on the website: http://www.gresham.ac.uk/the-biggest-questions-in-the-universe Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 1,800 lectures free to access or download from the website. Website: http://www.gresham.ac.uk Twitter: http://twitter.com/GreshamCollege Facebook: https://www.facebook.com/greshamcollege
Views: 1901 Gresham College
Unboxing the Universe
What if everything in the universe came to your doorstep...in a box?! What The Physics is BACK! Future episodes will explore the universe—but first, let's unbox it. Subscribe: http://youtube.com/whatthephysics?sub... ↓Want more info?↓ SCIENTIFIC NOTES: Explosive young stars * The average lifetime of a star is about 10 billion years, but the bigger the star, the shorter its life. One rare type of star, called a hypergiant, can be tens, hundreds, or even a thousand times the mass of our sun. These stars burn out and explode into supernovae in just a few million years. http://www.guide-to-the-universe.com/hypergiant-star.html Black holes * Black holes form from the collapse of a massive star at the end of its life, but this only happens in stars about three times as massive as the sun. http://burro.case.edu/Academics/Astr201/EndofSun.pdf How big is the universe? * Probably infinite. No one knows the size of the universe for sure, and we may never know, but the latest thinking is that it probably goes on forever. https://map.gsfc.nasa.gov/universe/uni_shape.html Standard cosmological model * According to the standard cosmological model, the universe started with a big bang, underwent rapid inflation within the first fraction of a second, and continues to expand, driven by a vacuum energy called dark energy. All of the structure we see in the universe has come from interactions between dark energy and dark matter (which accounts for about 85% of the universe’s matter). This model describes and predicts many phenomena in the universe but is not perfect. https://physics.aps.org/articles/v8/108 False vacuum model * The false vacuum model is a real, albeit unlikely theory. All the fundamental forces of nature have corresponding fields (e.g., gravitational fields, magnetic fields, etc.), and we generally believe that the universe is at rest in a global minimum of the potentials of those fields. But if we are instead at rest in a local minimum, or a “false vacuum,” the universe could potentially be nudged, catastrophically, into a lower minimum. Recycling stars into life * Before the first stars, the universe was all hydrogen and helium. All heavier elements, including the building blocks of life, were forged in stars. Dark matter and dark energy * Only 5% of the universe is made up of matter we can see. The “missing mass” later dubbed dark matter was first noticed in the 1930s; dark energy was discovered in the 1990s. In both cases, their existence was inferred by their effect on objects they interact with. However, they are still not directly observable, so nobody knows yet what they are made of. Leftover light from the Big Bang * The theory of the Big Bang predicted the existence of cool radiation pervading the universe, left over from its beginning. In an accidental discovery, two New Jersey scientists discovered the cosmic microwave background, a nearly uniform bath of radiation throughout the universe at a temperature of about 3 Kelvin, or -454 degrees Fahrenheit. Gravitational waves * Albert Einstein predicted the existence of gravitational waves in his theory of general relativity in 1916. According to his theory, the acceleration of massive objects, like black holes, should send ripples through space-time at the speed of light. A century after his prediction, two merging black holes sent a ripple through space-time that was detected on Earth as a signal that stretched the 4-kilometer arms of a detector by less than 1/1,000 the width of a proton. Cosmic dust * Cosmic dust is cast off from stars at the end of their lives and hovers in galaxies as clouds. These clouds of dust absorb ultraviolet and visible light, obscuring much of what lies behind them. This makes it notoriously difficult to study things like the dusty center of our galaxy. Fermi bubbles * Enormous bubbles of gamma rays protruding above and below the center of the galaxy, roughly along its axis of rotation. http://www.skyandtelescope.com/astronomy-resources/understanding-fermi-bubbles/ The observable universe * The universe is 13.8 billion years old. Since the distance we can observe is limited by the time it takes light to travel to Earth, we can only ever observe a fraction of the universe: an expanding sphere around us that is now about 46 billion years in radius. However, the universe is much larger than what we can observe. CREDITS: Host, Writer, Producer: Greg Kestin Animation & Compositing: Danielle Gustitus Contributing Writers: Lissy Herman, HCSUCS Filming, Writing, & Editing Contributions from: Samia Bouzid and David Goodliffe Creation of Sad Star Image: Drew Ganon Special thanks: Julia Cort Lauren Aguirre Ari Daniel Anna Rothschild Allison Eck Fernando Becerra And the entire NOVA team From the producers of PBS NOVA © WGBH Educational Foundation Funding provided by FQXi Music provided by APM Sound effects: Freesound.org Images: Big Bang – NASA Additional Animations: Edgeworx
Views: 17964 What The Physics?!
Does God Exist? | The Truth Seeker Project | Episode #2
Is there evidence for God's existence? Can it be proven scientifically? In today's episode of The Truth Seeker Project we take a look at the evidence for God's existence. REMEMBER: A Truth Seeker will search through the evidence themselves. I can only share so much. Be sure to study the subject for yourself. Original video of Frank Turek from Crossexamined.org | https://youtu.be/XjHhtWL_3Og One Reality Films "Deception In The Church" Watch here: https://youtu.be/g1LsiG3mG2k "Homophobia" Watch here: https://youtu.be/dvmGFS7pOU0 "Final Judgment" Watch here: https://youtu.be/YqI4XivbG9o "Sin Kills" Watch here: https://youtu.be/j2Au5YtU2oQ The Second Law of Thermodynamics -The Second Law of Thermodynamics states that the universe is running out of usable energy. -Sometimes called the Law of Entropy, the Second Law of Thermodynamics also states that the universe is moving toward disorder rather than order - that nature tends to bring things to disorder. -Without a beginning, by now the universe would be in complete disarray with no usable energy remaining. The Expanding Universe -In 1929, astronomer Edwin Hubble observed that the other galaxies in the universe are moving away from our galaxy. -If the galaxies are currently moving apart, then previously they must have been closer together. The ultimate extrapolation of this idea is that all of the matter in the universe originated from a single point. -It is important to understand that this beginning point was not a dense point of matter, like some kind of extremely compacted pellet, but was literally nothing – there was no space, no time, no matter. The Expanding Universe -Aristotle defined nothing as what rocks dream about. Nothing is literally no thing. -“According to the Big Bang Theory, the whole matter of the universe began to exist at a particular time in the remote past. A proponent of such a theory, at least if he is an atheist, must believe that the matter of the universe came from nothing by nothing.” Anthony Kenny -The universe is not expanding into empty space, but space itself is expanding – there was no space before the Big Bang. -It’s also important to understand that the universe did not emerge from existing material but from nothing – there was no matter before the Big Bang. -In fact, chronologically, there was no “before” the Big Bang because there are no “befores” without time, and there was no time until the Big Bang. -Time, space, and matter came into existence at the Big Bang. The Expanding Universe Cosmic Background Radiation -Good scientific theories often predict future discoveries. -Scientists predicted as early as 1948 that the universe began in a great explosion, called “The Big Bang” and that there would be remnant heat from that explosion still out there. -The remnant heat is actually cosmic background radiation and was discovered in 1965. -Quite literally the “smoking gun” of the Big Bang, this cosmic background radiation put to rest any lingering thought that the universe was eternal. Great Galaxy Seeds -In 1992 the theory that there should be slight variations in the temperature of the cosmic background radiation from the Big Bang was confirmed by data gather by the NASA satellite COBE. -It showed precise temperature variations in radiation, allowing just enough matter to congregate to form galaxies, but not so much as to cause the universe to collapse back in on itself. -The ripples in radiation show that the beginning of the universe was extremely precise—accurate to one part in 100,000. -Had it been even slightly different, galaxies would not have formed, leaving no place for life to have begun. -Therefore, the Big Bang was not a chaotic, random explosion but seems to have been a purposeful, controlled event. Einstein’s Theory of General Relativity -In 1916, Albert Einstein developed the theory of General Relativity. The theory of General Relativity demands an absolute beginning for time, space, and matter and proves that all three are interdependent— you can’t have one without the others. -The SURGE evidence shows that space, time and matter came into existence together. In other words, the universe exploded into being out of nothing. -Scientists call this the Big Bang, and theologians call creation out of nothing ex nihilo.
Views: 1138 One Reality
The Biggest Questions of Cosmology: Pondering the Imponderables
PROGRAM DESCRIPTION: Is our universe unique or one of many? What happened before the Big Bang? Why is there something rather than nothing? Physicists and cosmologists are closing in on how the universe operates at its very core. But even with powerful telescopes and particle accelerators pushed to their limits, experimenters struggle to keep up as theoreticians march forward, leaving grand theories untested. Some argue that if these deep questions can’t be answered empirically, they’re not relevant to science. Are they right? Join world-leading cosmologists, philosophers and physicists as they tackle the profound questions of existence. PARTICIPANTS: David Z. Albert, George F. R. Ellis, Alan Guth, Veronika Hubeny, Andrei Linde, Barry Loewer MODERATOR: Jim Holt WATCH THE TRAILER: https://youtu.be/8_dPccRi8kE WATCH THE LIVE Q&A W/ DAVID ALBERT: https://youtu.be/SWEpp_3qbGg MORE INFO ABOUT THE PROGRAM AND PARTICIPANTS: https://www.worldsciencefestival.com/programs/big-universe-bigger-questions/ This program is part of the Big Ideas Series, made possible with support from the John Templeton Foundation. - Subscribe to our YouTube Channel for all the latest from WSF - Visit our Website: http://www.worldsciencefestival.com/ - Like us on Facebook: https://www.facebook.com/worldsciencefestival/ - Follow us on Twitter: https://twitter.com/WorldSciFest TOPICS: - The Biggest Questions of Cosmology 00:05 - Participant Introductions 05:33 - Does eternity relate to infinity? 13:45 - Why is wrong to say the universe has a finite past? 24:15 - The two claims about inflation. 36:54 - Is 3D dimensional space the real space? 47:27 - The "measurement" problem 59:33 This program was recorded live on 6/3/17 and has been edited for our YouTube channel. Watch the original livestream here: https://youtu.be/Er7qPv8jsZo
Views: 149165 World Science Festival
Gravitational waves used to measure age of universe
Gravitational waves used to measure age of universe. Astronomers have used gravitational waves – ripples in the fabric of space and time caused by a violent cosmic event – to measure the age of the universe. The direct detection of gravitational waves from at least five sources during the past two years offers spectacular confirmation of Einstein’s model of gravity and space-time, researchers said. Now, astronomers at Harvard-Smithsonian Center for Astrophysics (CfA) in the US have used a single gravitational wave event (GW170817) to measure the age of the universe. A team of 1,314 scientists from around the world contributed to the detection of gravitational waves from a merging pair of binary neutron stars, followed by the detection of gamma-rays. They then identified the origin of the cataclysm in a source in the galaxy NGC4993 spotted in images taken with various time delays at wavelengths from the X-ray to the radio. An analysis of the gravitational waves from this event infers their intrinsic strength. The observed strength is less, implying that the source is about 140 million light-years away. NGC4993, its host galaxy, has an outward velocity due to the expansion of the universe that can be measured from its spectral lines. Knowing how far away it is and how fast the galaxy is moving from us allows scientists to calculate the time since the expansion began – the age of the universe: between about 11.9 and 15.7 billion years given the experimental uncertainties. The age derived from this single event is consistent with estimates from decades of observations relying on statistical methods using two other sources: the cosmic microwave background radiation (CMBR) and the motions of galaxies, researchers said. The former relies on mapping the very faint distribution of light dating from a time about four hundred thousand years after the big bang. The latter involves a statistical analysis of the distances and motions of tens of thousands of galaxies in relatively recent times.
Views: 6 Tech House
Americans John C. Mather and George F. Smoot win Nobel Prize in Physics
SHOTLIST 1. Various of Stockholm skyline 2. Tilt up of exterior of Royal Swedish Academy of Sciences 3. Close up of sign reading "Royal Swedish Academy of Sciences" 4. Mid shot of Nobel committee 5. Audience listening 6. SOUNDBITE (English) Gunnar Oquist, Permanent Secretary of the Royal Swedish Academy of Sciences: "The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for the year 2006 jointly to John Mather and George Smoot, they get the prize for their discovery of the blackbody form and anisotropy of the cosmic microwave background radiation. Both of the laureates are from the US." 7. Photographs of the winners being shown on the screen 8. Various names of winners on a written press release 9. Wide of audience 10. Various of screen shots showing presentation of winners study on the universe 11. SOUNDBITE (English) Gunnar Oquist, Permanent Secretary of the Royal Swedish Academy of Sciences: (speaking on phone with winner John C Mather) "I think everybody in the room would like to join me in congratulating you on your achievement and congratulating you and Doctor Smoot." 12. Photograph of John C Mather, AUDIO (English) John C Mather, winner of the Nobel Prize for Physics 2006: "When I heard about the prize I was certainly thrilled and amazed, I can't say I was completely surprised because people have been telling us that we should be recognised but this is such a special and rare honour for people that I am still amazed." 13. Wide of journalists 14. SOUNDBITE (English) Lars Bergstrom, Secretary of the Nobel Committee for Physics: "And of course this has completely changed cosmology. All these things that we speak about now like dark matter, dark energy, various parameters, limits on neutrino masses from cosmology all of these measurements were a starting point for all of this, it has opened the door to a while new field of cosmology." 15. Pan right of hall Lawrence Berkeley Laboratory 16. Two stills of George F Smoot NASA 17. Still of John C Mather NASA FILE, April 1992 18. Various of ripples at the edge of the cosmos detected by NASA's Cosmic Background Explorer (COBE) that are the fossilised imprints of the birth of the stars and galaxies STORYLINE: Americans John C Mather and George F Smoot won the 2006 Nobel Prize in physics on Tuesday for work that helped shed more light on the beginning of the universe and the origin of galaxies and stars. The scientists were awarded the prize for discovering the nature of "blackbody radiation," cosmic background radiation believed to stem from the so-called Big Bang when the universe was created, the Royal Swedish Academy of Sciences in Stockholm said. Their work was based on measurements done with the help of the NASA-launched Cosmic Background Explorer satellite in 1989. They were able to observe the universe in its early stages about 380,000 years after it was born. Ripples in the light they detected also helped demonstrate how galaxies came together over time. By confirming the predictions of the Big-Bang theory, which states that the universe was borne of a dense and incredibly hot state billions of years ago, with direct quantitative evidence, the scientists transformed the study of the early universe from a largely theoretical pursuit into a new era of direct observation and measurement. "The very detailed observations that the laureates have carried out from the COBE satellite have played a major role in the development of modern cosmology into a precise science," the academy said in its citation. Mather, 60, works at the NASA Goddard Space Flight Center in Greenbelt, Maryland, and Smoot, 61, works at the Lawrence Berkeley National Laboratory in Berkeley, California. You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/52b31b717308ac6450158e8ba7cf3258 Find out more about AP Archive: http://www.aparchive.com/HowWeWork
Views: 194 AP Archive
Our Cosmic Mistake About Gravitational Waves
Two years ago, we reported on a finding that was later disproved! What have we learned about gravitational waves since then? How We Know The Big Bang Actually Happened - https://youtu.be/becPAiAmFNo Were Scientists Wrong About The Big Bang? - https://youtu.be/fytASaGxyWw Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Read More: IT'S OFFICIAL: Gravitational waves have been detected, Einstein was right http://www.sciencealert.com/live-update-big-gravitational-wave-announcement-is-happening-right-now "After 100 years of searching, an international team of physicists has confirmed the existence of Einstein's gravitational waves, marking one of the biggest astrophysical discoveries of the past century. It's a huge deal, because it not only improves our understanding of how the Universe works, it also opens up a whole new way of studying it." Big Bang, Inflation, Gravitational Waves: What It Means http://www.seeker.com/big-bang-inflation-gravitational-waves-what-it-means-1768386150.html "Etched into the most ancient radiation that pervades the entire universe and created - literally - at the dawn of time, gravitational waves have been directly observed, giving us a glimpse as to the nature of the inflationary period that is theorized to have caused the rapid growth of our universe just after the Big Bang." Gravitational Waves Discovery Now Officially Dead https://www.scientificamerican.com/article/gravitational-waves-discovery-now-officially-dead1/ "The European Space Agency (ESA) announced the long-awaited results on January 30, a day after a summary of it had been unintentionally posted online by French members of the Planck satellite team and then widely circulated before it was taken down." ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos daily. Watch More DNews on Seeker http://www.seeker.com/show/dnews/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Trace Dominguez on Twitter https://twitter.com/tracedominguez DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ https://plus.google.com/u/0/+dnews Seeker http://www.seeker.com/ Sign Up For The Seeker Newsletter Here: http://bit.ly/1UO1PxI Special thanks to Ian O'Neill for hosting and writing this episode of DNews! Check Ian out on Twitter: https://twitter.com/astroengine
Views: 78952 Seeker
Top 10 Reasons the Universe is Electric #5: Pulsars | Space News
EU2017: Future Science -- Rebroadcast—only $29: https://www.electricuniverse.live One of the strangest hypothetical astrophysical objects is called a neutron star. Scientists tell us that the material leftover from a supernova explosion of a massive star collapses gravitationally, forming an incredibly small yet massively dense star mostly composed of tightly packed neutrons. A rotating neutron star is said to emit narrow beams of radiation, called pulsars. But the theoretical and evidential objections to this hypothesis are numerous. In this episode we explore the promising theoretical alternatives in the disciplines of plasma physics and electrical engineering. Perratt and Healy paper cited in this video: http://adsabs.harvard.edu/full/1995Ap%26SS.227..229H If you see a CC with this video, it means that subtitles are available. To find out which ones, click on the Gear Icon in the lower right area of the video box and click on “subtitles” in the drop down box. Then click on the subtitle that you would like. Don’t miss the NEW Patreon rewards for 2017 at PATREON— “Changing the world through the understanding of the Electric Universe.” https://www.patreon.com/tboltsproject Subscribe to Thunderbolts Update newsletter: http://eepurl.com/ETy41 The Thunderbolts Project Home: http://www.thunderbolts.info Essential Guide to the Electric Universe: http://www.thunderbolts.info/wp/eg-contents/ Facebook: http://www.facebook.com/thunderboltsproject Twitter: @tboltsproject Electric Universe by Wal Thornhill: http://www.holoscience.com/wp/ Electric Universe T-shirts and Gifts: http://stickmanonstone.com/ The ideas expressed in videos presented on The Thunderbolts Project YouTube Channel do not necessarily express the views of T-Bolts Group Inc or The Thunderbolts Project(TM).
Views: 24615 ThunderboltsProject
The Sun is NOT a Gaseous Plasma! The LMH Solar Model!
Thank you for viewing this video on Sky Scholar! This channel is dedicated to new ideas about the nature of the sun, the stars, thermodynamics, and the microwave background. We will discuss all things astronomy, physics, chemistry, and imaging related! We hope that the combination of facts and special effects will aid in learning even the toughest concepts in astronomy. If you enjoyed this video, please subscribe. Sky Scholar will be releasing at least one video per week to make sure you don’t run out of content! P.M. Robitaille, Forty Lines of Evidence for Condensed Matter - The Sun on Trial: Liquid Metallic Hydrogen as a Solar Building Block, Progr. Phys. 2013, v. 4, 90-142. http://ptep-online.com/2013/PP-35-16.PDF J.C. Robitaille and P.M. Robitaille Liquid Metallic Hydrogen III. Intercalation and Lattice Exclusion Versus Gravitational Settling and Their Consequences Relative to Internal Structure, Surface Activity, and Solar Winds in the Sun, Progr. Phys. 2013, v. 2, 87-97. http://ptep-online.com/2013/PP-33-14.PDF P.M. Robitaille, The Liquid Metallic Hydrogen Model of the Sun and the Solar Atmosphere IV. On the Nature of the Chromosphere, Progr. Phys. 2013, v. 3, L15-L21. http://ptep-online.com/2013/PP-34-L6.PDF P.M. Robitaille, The Liquid Metallic Hydrogen Model of the Sun and the Solar Atmosphere V. On the Nature of the Corona, Progr. Phys. 2013, v. 3, L22-L25. http://ptep-online.com/2013/PP-34-L7.PDF P.M. Robitaille, The Liquid Metallic Hydrogen Model of the Sun and the Solar Atmosphere VI. Helium in the Chromosphere, Progr. Phys. 2013, v. 3, L26-L29. http://ptep-online.com/2013/PP-34-L8.PDF P.M. Robitaille, The Liquid Metallic Hydrogen Model of the Sun and the Solar Atmosphere VII. Further Insights into the Chromosphere and Corona, Progr. Phys. 2013, v. 3, L30-L36. http://ptep-online.com/2013/PP-34-L9.PDF Helioseismic results from GONG https://gong.nso.edu/gallery/disk2k10/data/resource/torsional/gongcut.png Ripples on the Sun https://sohowww.nascom.nasa.gov/gallery/images/quakes.html Splashes onto the photosphere https://www.youtube.com/watch?v=wDLzQN1H6cA twitter.com/SkyScholarVideo Pierre-Marie Robitaille, Ph.D., is a professor of radiology at The Ohio State University. He also holds an appointment in the Chemical Physics Program. In 1998, he led the design and assembly of the world’s first Ultra High Field MRI System. This brought on the need to question fundamental aspects of thermal physics, including ideas related to Kirchhoff’s Law of thermal emission, and more. These presentations are not endorsed by The Ohio State University. Figures not to scale and used for visualization purposes only. This channel is educational in nature. Astronomy links of interest: Space Weather: http://spaceweathernews.com/ NASA Image and Video Search: images.nasa.gov/ NASA Hubble Satellite: hubblesite.org/ NASA Helioviewer: helioviewer.org/ NASA ADS Scientific Article Search Page: adsabs.harvard.edu/bib_abs.html National Solar Observatory: nso.edu/ SOHO Satellite: soho.nascom.nasa.gov/ SDO Satellite: sdo.gsfc.nasa.gov/data/ IRIS Satellite: https://www.nasa.gov/mission_pages/iris/index.html Hinode, JAXA/NASA: https://www.nasa.gov/mission_pages/hinode/index.html Daniel K. Inoue Solar Telescope: dkist.nso.edu/ National Solar Observatory GONG: gong.nso.edu/ 1 meter Swedish Solar Telescope: www.isf.astro.su.se/ All observational images and videos are credited to NASA unless otherwise specified. Images obtained by the SDO satellite are a courtesy of NASA/SDO and the AIA, EVE, and HMI science teams. Images obtained by the SOHO satellite are courtesy of SOHO (ESA & NASA). Link to Professor Robitaille’s papers on Vixra: http://vixra.org/author/pierre-marie_robitaille Outro Music: Foria: Break Away https://soundcloud.com/foria https://www.youtube.com/watch?v=UkUweq5FAcE
Views: 10505 Sky Scholar
Were Scientists Wrong About The Big Bang?
Back in March, scientists announced the discovery of gravitational waves and evidence for the Big Bang! What are gravitational waves, and is their evidence real? Dr. Ian O'Neill joins DNews to break down this complex concept. Follow Ian on Twitter: https://twitter.com/astroengine Read Some of Ian's Recent Stories: http://news.discovery.com/contributors/ian-oneill.htm Read More: BICEP2 2014 Release Image Gallery http://bicepkeck.org/visuals.html "Gravitational waves from inflation generate a faint but distinctive twisting pattern in the polarization of the CMB, known as a "curl" or B-mode pattern." WMAP image of the CMB anisotrophy http://en.wikipedia.org/wiki/Introduction_to_general_relativity#mediaviewer/File:WMAP_image_of_the_CMB_anisotropy.jpg "Image of radiation emitted no more than a few hundred thousand years after the big bang, captured with the satellite telescope WMAP." The Big Bang http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010128/ "This dominant cosmological theory suggests the Universe began nearly 13.7 billion years ago, expanding rapidly from a very dense and incredibly hot state. Eventually, stars ignited and galaxies slowly formed." Watch More: Proving the Big Bang Theory https://www.youtube.com/watch?v=becPAiAmFNo TestTube Wild Card http://testtube.com/dnews/dnews-398-baby-talk-actually-makessense?utm_source=YT&utm_medium=DNews&utm_campaign=DNWC How Big Is the Universe? https://www.youtube.com/watch?v=hz0KGVwGwXQ ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Tara Long on Twitter https://twitter.com/TaraLongest Laci Green on Twitter http://twitter.com/gogreen18 DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq
Views: 175328 Seeker
A Telegram from the Early Universe
A Telegram from the Early Universe Dr. Marc Kamionkowski In March 2014, a small group of scientists working at a new observatory near the South Pole announced the detection of a new relic from the early Universe. The observations found a particular pattern in the cosmic microwave background, the remnant heat left over from the Big Bang. These results have been interpreted as a propagating ripple in the fabric of space-time created within the first trillionth of a trillionth of a trillionth of a second after the Big Bang. Should this result hold up, it will be one of the most significant advances for cosmology in several decades. Some cosmologists, however, need more information to be convinced. Dr. Kamionkowski will explain not only what has been observed, but also what still needs to be done to establish the results more firmly. There may be fascinating implications for our understanding of the origin of the universe. Host: Dr. Frank Summers Recorded live on November 11, 2014 at the Space Telescope Science Institute in Baltimore, MD, USA For more information: http://hubblesite.org/about_us/public_talks/
Views: 11312 Hubble Space Telescope
EMF, RF, Microwave Radiation Prevention
Many scientist throughout the world state that if the trend continues (the proliferation of electromagnetic fields), approximately 50% of the developed world's population will become electromagnetic hypersensitive (EHS), by 2017. This disorder is becoming common and is recognized by the World Health Organization (WHO). Neuroscience has found significant correlations between solar activity, geomagnetic activity, electromagnetic fields, human health, consciousness & behavior. Awareness of the environment is empowering. Music by: Xenyka Track: Higher Level Jamendo.com Video by Victoria Neuronotes 2011 US copyright Title 17 U.S.C. Section 107
Views: 326 NeuroNotes
The Universe contains everything that exists, from the tiniest subatomic particles to galactic superclusters (the largest structures known). Nobody knows how big the Universe is, but astronomers estimate that it contains about 100 billion galaxies, each comprising an average of 100 billion stars. The most widely accepted theory about the origin of the Universe is the Big Bang theory, which states that the Universe came into being in a huge explosion – the Big Bang – that took place between 10 and 20 billion years ago. The Universe initially consisted of a very hot, dense fireball of expanding, cooling gas. After about one million years, the gas probably began to condense into localized clumps called protogalaxies. During the next five billion years, the protogalaxies continued condensing, forming galaxies in which stars were being born. Today, billions of years later, the Universe as a whole is still expanding, although there are localized areas in which objects are held together by gravity; for example, many galaxies are found in clusters. The Big Bang theory is supported by the discovery of faint, cool background radiation coming evenly from all directions. This radiation is believed to be the remnant of the radiation produced by the Big Bang. Small “ripples” in the temperature of the cosmic background radiation are thought to be evidence of slight fluctuations in the density of the early Universe, which resulted in the formation of galaxies. Astronomers do not yet know if the Universe is “closed”, which means it will eventually stop expanding and begin to contract, or if it is “open”, which means it will continue expanding forever. Galaxies A galaxy is a huge mass of stars, nebulae, and interstellar material. The smallest galaxies contain about 100,000 stars, while the largest contain up to 3,000 billion stars. There are three main types of galaxy, classified according to their shape: elliptical, which are oval shaped; spiral, which have arms spiraling outwards from a central bulge; and irregular, which have no obvious shape. Sometimes, the shape of a galaxy is distorted by a collision with another galax
Views: 117 Terra Byte
The Origin of the Universe and the Arrow of Time
Google Tech Talk August 13, 2010 ABSTRACT Presented by Sean Carroll. One of the most obvious facts about the universe is that the past is different from the future. We can remember yesterday, but not tomorrow; we can turn an egg into an omelet, but can't turn an omelet into an egg. That's the arrow of time, which is consistent throughout the observable universe. The arrow can be explained by assuming that the very early universe was extremely orderly, and disorder has been increasing ever since. But why did the universe start out so orderly? I will talk about the nature of time, the origin of entropy, and how what happened before the Big Bang may be responsible for the arrow of time we observe today. Speaker Info: Sean Carroll I'm a theoretical physicist at Caltech in sunny Pasadena, California. My research interests include theoretical aspects of cosmology, field theory, and gravitation. I want to learn about fundamental physics by studying the structure and evolution of the universe. These days I'm especially interested in inflation, the arrow of time, and what happened at or before the Big Bang. I've done a bunch of work on dark matter and dark energy, modified gravity, topological defects, extra dimensions, and violations of fundamental symmetries. I recently finished writing a popular-level book on cosmology and the arrow of time: From Eternity to Here: The Quest for the Ultimate Theory of Time, which I expect all of you to buy. I previously wrote a graduate textbook, Spacetime and Geometry: An Introduction to General Relativity, and recorded a set of lectures on cosmology for the Teaching Company. I started blogging back in 2004, and keep it up to this day with the help of several friends at Cosmic Variance.
Views: 189717 GoogleTechTalks
Who Made God?
-Since each chapter builds on the next, you are missing quite a lot of this book starting on the 92nd page. I deeply encourage you to check this book out and see the whole argument for Christianity. 'I Don't Have Enough FAITH to Be an ATHEIST' by Frank Turek and Norman L. Geisler (www.ImpactApologetics.com) The universe simply cannot be eternal according to SURGE: S--The Second Law of Thermodynamics('..the Second Law states, among other things, that the universe is running out of usable energy..') U--The Universe Is Expanding('How does the expanding universe prove a beginning?...if we could watch a video recording of the history of the universe, in reverse, we would see all matter in the universe collapse back...mathematically and logically to a point that is actually nothing') R--Radiation from the Big Bang(Penzias and Wilson 'discovered the afterglow from the Big Bang fireball explosion') G--Great Galaxy Seeds('If the Big Bang actually occurred, scientists believed that we should see slight variations [or ripples] in the temperature of the cosmic background radiation...COBE not only found the ripples, but scientists were amazed at their precision. The ripples show that the explosion and expansion of the universe was precisely tweaked to cause just enough matter to congregate to allow galaxy formation, but not enough to cause the universe to collapse back on itself. Any slight variation one way or the other, and none of us would be here to tell about it.') E--Einstein's Theory of General Relativity('..its discovery was the beginning of the end for the idea that the universe is eternal. The theory itself, which has been verified to five decimal places, demands an absolute beginning for time, space, and matter. It shows that time, space, and matter are co-relative. That is, they are interdependent--you can't have one without the others.') And that's just PART of the evidence! Music: Quutamo - Apocalyptica www.markcahill.org www.ImpactApologetics.com
Views: 1602 4EverLoveAmbassador
How to find black holes with lasers: Dr Andreas Freise
In 1916, Einstein -- as a consequence of his new theory of gravity -- predicted the existence of gravitational radiation (ripples in the fabric of space--time that propagate at the speed of light). Today, the hunt for such gravitational waves has sparked a new field of fundamental and instrumental science, using kilometre-sized telescopes that exploit laser technology. These new instruments are now in operation and close to observing Einstein's prediction for the very first time. The observation of gravitational waves has the potential to change dramatically our understanding of the universe; we will be able to "hear" some of the most violent events in cosmic history, including black holes colliding in the centre of galaxies and the first fraction of a second after the Big Bang. Watch other Physics in Perspective speakers at: http://www.iop.org/resources/videos/education/pip/index.html
Views: 3170 Institute of Physics
Ed Copeland: The state of the Universe
Public Lecture at the 100 Years of General Relativity talks series, Dec 3, 2015
Views: 8081 digt-group
Gravitational wave - Video Learning - WizScience.com
In physics, "gravitational waves" are ripples in the curvature of spacetime which propagate as waves, travelling outward from the source. Predicted in 1916 by Albert Einstein to exist on the basis of his theory of general relativity, gravitational waves theoretically transport energy as "gravitational radiation". Sources of detectable gravitational waves could possibly include binary star systems composed of white dwarfs, neutron stars, or black holes. The existence of gravitational waves is a possible consequence of the Lorentz invariance of general relativity since it brings the concept of a limiting speed of propagation of the physical interactions with it. Gravitational waves cannot exist in the Newtonian theory of gravitation, in which physical interactions propagate at infinite speed. Although gravitational radiation has not been "directly" detected, there is "indirect" evidence for its existence. For example, the 1993 Nobel Prize in Physics was awarded for measurements of the Hulse–Taylor binary system which suggest that gravitational waves are more than mathematical anomalies. Various gravitational wave detectors exist and on 17 March 2014, astronomers at the Harvard–Smithsonian Center for Astrophysics claimed that they had detected and produced "the first direct image of gravitational waves across the primordial sky" within the cosmic microwave background, providing strong evidence for inflation and the Big Bang. Peer review will be needed before there can be any scientific consensus about these new findings. On 19 June 2014, lowered confidence in confirming the cosmic inflation findings was reported; on 19 September 2014, a further reduction in confidence was reported and, on 30 January 2015, even less confidence yet was reported. Wiz Science™ is "the" learning channel for children and all ages. SUBSCRIBE TODAY Disclaimer: This video is for your information only. The author or publisher does not guarantee the accuracy of the content presented in this video. USE AT YOUR OWN RISK. Background Music: "The Place Inside" by Silent Partner (royalty-free) from YouTube Audio Library. This video uses material/images from https://en.wikipedia.org/wiki/Gravitational+wave, which is released under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . This video is licensed under Creative Commons Attribution-Share-Alike License 3.0 http://creativecommons.org/licenses/by-sa/3.0/ . To reuse/adapt the content in your own work, you must comply with the license terms.
Views: 13 Wiz Science™
Gravitational waves explained with a towel and an apple
Feel like you need a giant IQ to understand the announcement about gravitational waves? Nonsense. Our video explains the basics using nothing but everyday objects Full story: http://www.newscientist.com/article/dn25254
Views: 200191 New Scientist
Chao-Lin Kuo: Searching for Primordial Gravitational Waves with B-mode polarization
ICTP Summer School on Cosmology 2016 10 June 2016 - 15:30 Chao-Lin Kuo: Searching for Primordial Gravitational Waves with B-mode polarization: the BICEP program and beyond
dr Mikołaj Korzyński "BICEP2 experiment - detection of the imprint of gravitational waves in CMB"
dr Mikołaj Korzyński (CFT PAN) "BICEP2 experiment - detection of the imprint of gravitational waves in CMB" Środowe seminarium CFT PAN. 2014.06.25 http://www.cft.edu.pl/cft_work/seminarium-cft.html
Additional Physics (P2) Isotopes and Background Radiation
This video is about Isotopes and Background Radiation and is for pupils studying GCSE Additional Science. It is specifically designed for pupils studying the AQA specification, but is also useful for pupils studying other specifications e.g. Edexcel and OCR.
Views: 397 Revision Monkey
Gravitational Waves Discovery - Sixty Symbols
Discussed by Ed Copeland and Mike Merrifield. Extra footage from these interviews: https://youtu.be/2uYEayOBj1k More on Black Holes from Sixty Symbols: http://bit.ly/Black_Hole_Videos LIGO: https://www.ligo.caltech.edu Cool Black Hole simulations and info: http://www.black-holes.org LHC visit: http://bit.ly/LHCvideos Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9
Views: 233703 Sixty Symbols

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