- published: 22 Jun 2016
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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 on the basis of his theory of general relativity, gravitational waves transport energy as gravitational radiation. The existence of gravitational waves is a possible consequence of the Lorentz invariance of general relativity since it brings the concept of a finite speed of propagation of the physical interactions with it. By contrast, gravitational waves cannot exist in the Newtonian theory of gravitation, which postulates that physical interactions propagate at infinite speed.
Before the direct detection of gravitational waves, there was indirect evidence for their existence. For example, measurements of the Hulse–Taylor binary system suggested that gravitational waves are more than a hypothetical concept. Potential sources of detectable gravitational waves include binary star systems composed of white dwarfs, neutron stars, and black holes. Various gravitational-wave observatories (detectors) are under construction or in operation, such as Advanced LIGO which began observations in September 2015.
Neil deGrasse Tyson (/ˈniːəl dəˈɡræs ˈtaɪsən/; born October 5, 1958) is an American astrophysicist, cosmologist, author, and science communicator. Since 1996, he has been the Frederick P. Rose Director of the Hayden Planetarium at the Rose Center for Earth and Space in New York City. The center is part of the American Museum of Natural History, where Tyson founded the Department of Astrophysics in 1997 and has been a research associate in the department since 2003.
Born in New York City, Tyson became interested in astronomy at the age of nine after a visit to the Hayden Planetarium. After graduating from the Bronx High School of Science, where he was editor-in-chief of the Physical Science Journal, he completed a bachelor's degree in physics at Harvard University in 1980. After receiving a master's degree in astronomy at the University of Texas at Austin in 1983, he earned his master's (1989) and doctorate (1991) in astrophysics at Columbia University. For the next three years, he was a postdoctoral research associate at Princeton University, and in 1994, he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210-million reconstruction project, which was completed in 2000.
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On September 14th, 2015, a ripple in the fabric of space, created by the violent collision of two distant black holes over a billion years ago, washed across the Earth. As it did, two laser-based detectors, 50 years in the making – one in Louisiana and the other in Washington State – momentarily twitched, confirming a century-old prediction by Albert Einstein and marking the opening of a new era in astronomy. Join some of the very scientists responsible for this most anticipated discovery of our age and see how gravitational waves will be used to explore the universe like never before. This program will feature exclusive footage from director Les Guthman’s upcoming documentary chronicling the drama of the gravitational waves discovery. Subscribe to our YouTube Channel for all the latest ...
Have Gravitational Waves finally been detected by LIGO? Physicists Umberto Cannella and Daniel Whiteson explain what they are and why they'll cause a big ripple in our understanding of the Universe. Subscribe to our channel: http://www.youtube.com/subscription_c... More at: http://phdcomics.com/tv Produced by Umberto Cannella Narrated by Daniel Whiteson Animated by Jorge Cham Written by Umberto Cannella, Daniel Whiteson and Jorge Cham Special thanks to: Aidan Brooks, Flip Tanedo and LIGO Read the comics at: http://phdcomics.com/comics.php?f=1853 This work is licensed under a Creative Commons Attribution-NonCommercial 2.5 License.
After a decades-long quest, The MIT-Caltech collaboration LIGO Laboratories has detected gravitational waves, opening a new era in our exploration of the universe. Read more: http://news.mit.edu/2016/ligo-first-detection-gravitational-waves-0211 Produced by MIT Video Productions and MIT News Office Producer/Editor: Bill Lattanzi Footage courtesy of: Hans Peter Bischof; California Institute of Technology; Jet Propulsion Laboratory; LIGO, A Passion for Understanding, by Kai Staats; MIT; National Science Foundation; Roger Smith; Virginia Trimble, widow of Joseph Weber; Wikipedia Commons
Brian Greene stops by to demonstrate an exciting new scientific discovery. Subscribe To "The Late Show" Channel HERE: http://bit.ly/ColbertYouTube For more content from "The Late Show with Stephen Colbert", click HERE: http://bit.ly/1AKISnR Watch full episodes of "The Late Show" HERE: http://bit.ly/1Puei40 Download the Colbert App HERE: http://apple.co/1Qqgwk4 Like "The Late Show" on Facebook HERE: http://on.fb.me/1df139Y Follow "The Late Show" on Twitter HERE: http://bit.ly/1dMzZzG Follow "The Late Show" on Google+ HERE: http://bit.ly/1JlGgzw Watch The Late Show with Stephen Colbert weeknights at 11:35 PM ET/10:35 PM CT. Only on CBS. Get the CBS app for iPhone & iPad! Click HERE: http://bit.ly/12rLxge Get new episodes of shows you love across devices the next day, stream live TV, and ...
Discussion video about LIGO and gravitational waves: https://www.youtube.com/watch?v=Vkfobw_PSSE Tom Scott's video about frame rate: https://www.youtube.com/watch?v=uzP8FFKpwQ0 Visit my blog here: http://stevemould.com Follow me on twitter here: http://twitter.com/moulds Buy nerdy maths things here: http://mathsgear.co.uk
Has the last great prediction of Einstein's general relativity finally been verified? Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime For the past 90 years, the predictions laid out Einstein's general theory of relativity have continued to be confirmed by experimental science. The last hold out is gravitational waves - the idea that certain gravitational events cause actual ripples in Spacetime. The problem is that the effects are almost beyond microscopic, so they are incredibly hard to detect. But have scientist done it? Have gravitational waves finally been directly observed??? Watch the episode to find out. Gravitational Waves Extra Credit: Nature article on rumor: ...
The very first gravitational wave has been detected by LIGO, proving Albert Einstein’s Theory of Relativity! Where did it come from and what does it mean for the future of space science? Gravitational Waves Explained ►►►► http://bit.ly/1PQcq8A Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG Read More: Gravitational Waves Detected for First Time http://news.discovery.com/space/galaxies/gravitational-waves-detected-for-first-time-160211.htm “A century after being proposed by physicist Albert Einstein, scientists have made the first detection of gravitational waves -- massive celestial objects on the move causing spacetime itself to ripple -- a historic discovery that opens up an entirely new way of studying the cosmos.” Observation of Gravitational Waves from...
GO HERE NOW: https://www.einsteinathome.org Einstein@Home wikipedia page: https://en.m.wikipedia.org/wiki/Einstein@Home This video is about gravitational waves in the weak field limit as discovered by the LIGO collaboration, explained by parallels to electromagnetic radiation, sound waves, water waves, etc. I want to see Cat LIGO ASAP! Thanks to everyone who supports MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon supporters here: http://www.minutephysics.com/supporters.html Music by Nathaniel Schroeder, http://www.soundcloud.com/drschroeder REFERENCES Linearized Einstein Equations: http://web.phys.ntnu.no/\~mika/week10.pdf Gravitational Wave Detection: http://iopscience.iop.org/article/10.1088/0034-4885/72/7/076901/meta LIGO Mirror Test mass suspensi...
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Advanced LIGO detectors have identified a second gravitational wave event occurring from the merger of two black holes. Gravitational Waves Discovered! Here's What You Need To Know - http://bit.ly/24PgHwC Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Read More: Gravitational Waves Detected 100 Years After Einstein's Prediction https://www.ligo.caltech.edu/news/ligo20160211 "For the first time, scientists have observed ripples in the fabric of spacetime called gravitational waves, arriving at the earth from a cataclysmic event in the distant universe. This confirms a major prediction of Albert Einstein's 1915 general theory of relativity and opens an unprecedented new window onto the cosmos." Here's the first person to spot those gravitational waves http:...
There is little doubt that September 14, 2015 will go down in scientific history. It was the day that one of the most intriguing predictions of Einstein’s General Relativity morphed from theory into reality. It was the day on which an entirely new field of scientific inquiry, gravitational wave astronomy, was born. And it was the day that human beings acquired a new sense, a completely new way of observing and learning about the universe unlike anything that has existed before. https://www.ligo.caltech.edu/news/ligo20160914 (This video was created on September 19, 2016).
Listen to the full audiobook, or read it's ebook version: http://appgame.space/mabk/30/en/B01BUJ3TY8/book Since Einstein first described them nearly a century ago, gravitational waves have been the subject of more sustained controversy than perhaps any other phenomenon in physics. These as yet undetected fluctuations in the shape of space-time were first predicted by Einstein's general theory of relativity, but only now, at the dawn of the twenty-first century, are we on the brink of finally observing them. Daniel Kennefick's landmark book takes readers through the theoretical controversies and thorny debates that raged around the subject of gravitational waves after the publication of Einstein's theory. The previously untold story of how we arrived at a settled theory of gravitational wav...
Michio Kaku - Gravity Waves & Black Holes from July 2016
A century ago, Albert Einstein revolutionized our understanding of the nature of space, time and gravitation. His general theory of relativity predicts, in particular, the existence of black holes and gravitational waves. By sheer coincidence, the celebration of general relativity’s centennial also marked the first-ever observation, by the two ground-based LIGO interferometers, of gravitational waves emitted during the coalescence of two stellar-mass black holes. This was the first direct detection of gravitational waves, but also the first direct evidence for the existence of black holes. This two-part lecture will provide an introduction to the blossoming field of gravitational-wave science. The first part of the lecture will address the following questions : what are gravitational wave...
Gravitational Waves Explained ( #Neil #deGrasse #Tyson, #Brian #Greene , #Lawrence #Krauss. #Michio #Kaku)#Mind #blowing #documentary ➤ #Subscribe and more videos at: http://goo.gl/dgHQSp ➤ Facebook: https://goo.gl/2dSG31 ➤ Twitter: https://goo.gl/IMm1ig ➤ Google+ : http://goo.gl/quhV8x ➤ Site: https://goo.gl/O79JTG ➤ Thanks for watching :) #Sciencetoday is channel uses for #education, #teaching, #review, #commentary, or research...The content is taken from the internet . If you have any issues with content, please contact us, for an amicable and we will process immediately . We are happy to share useful content to everyone . Thanks for your cooperation.
They are defined as a ripple in the fabric of space and time. To understant it we must consider that space is a giant sheet of rubber. And all the planets are masses to be considered. It is further observed that if we place planets on the rubber sheet it will bend the rubber sheet. Because things that have mass bend the rubber. More the mass more the sheet will bend. And due to this bend if we put a small ball around that mass on the rubber sheet it will start revolving around the mass. This is how gravity is defined here. Following the same principle , earth revolve around the sun. the sun creates a bend in the space , producing a gravitational wave causing earth to revolve around the sun. Everything thas has mass and energy can form a gravitational wave. Considering two people to danc...
On September 14, 2015, the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) made the first direct measurement of a gravitational wave coming from deep space. That wave was generated by the collision of two black holes about 1.3 billion light-years from Earth. As the black holes violently merged, they released as much energy in a fraction of a second as our entire galaxy emits in 4,000 years. But by the time the resulting gravitational wave reached Earth it was tiny, stretching the 4-kilometer-long LIGO detectors by just a tiny fraction of the diameter of a proton. How can scientists be sure they have seen such a tiny effect? What can it tell us about one of the most violent events in the universe? Can we expect to see more gravitational waves, opening up a new type of as...
This morning leaders of the Laser Interferometer Gravitational Wave Observatory (LIGO) announced the first direct detection of gravitational waves. In honor of this momentous discovery, the Perimeter Institute in Waterloo, Ontario, is hosting a live webcast today at 1pm EST: “Ripple Effects: A Forum on Gravitational Waves.” Video courtesy of National Science Foundation. Read more: http://gizmodo.com/holy-shit-scientists-have-confirmed-the-existence-of-g-1755465297 We come from the future. https://gizmodo.com
Public Lecture: Friday, February 19, 2016 "The New Era of Gravitational Wave Astronomy" Join Matias Zaldarriaga, Professor in the School of Natural Sciences, Scott Tremaine, Richard Black Professor in the School, and Members Doron Kushnir and Nadia Zakamska for a discussion of the recent Laser Interferometer Gravitational-Wave Observatory (LIGO) results and their implications. The panel discussion will be moderated by Robbert Dijkgraaf, Director and Leon Levy Professor. More videos on http://video.ias.edu
Watch the rest of the lectures on http://www.cosmolearning.com/courses/overview-of-gravitational-wave-science-400/ Redistributed with permission. This video is taken from a 2002 Caltech on-line course on "Gravitational Waves", organized and designed by Kip S. Thorne, Mihai Bondarescu and Yanbei Chen. The full course, including this and many other lecture videos, exercises, solutions to exercises, and lists of relevant reading, are available on the web at http://elmer.caltech.edu/ph237/ (currently offline, mirror page found at http://www.aei.mpg.de/~pau/GWs_Course.html)
Sheila Rowan explains the nature of gravitational waves, where they come from, how we detected them, and what the future of this new era in astronomy might look like. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the Q&A; here: https://www.youtube.com/watch?v=dYc2rvRzrxU A century ago, Albert Einstein realised that in his new model for space and time in our Universe (his 'General Theory of Relativity'), space could be stretching and squashing in response to the motion of objects. These ripples in space-time - 'Gravitational waves' - are produced by some of the most energetic and dramatic phenomena in our universe, including black holes, neutron stars and supernovae. Close to 100 years after the prediction of the existence of gravitational waves, the advanced detec...
Headline news was made earlier this year when the detection of gravitational waves, caused by the collision of two black holes, was confirmed by the Laser Interferometer Gravitational-Wave Observatory (LIGO). And earlier this month, another ripple was detected! The observed ripples in the fabric of space-time validate a key prediction in Albert Einstein's theory of general relativity. One hundred years old, the theory continues to astonish scientists with how correct it is. LIGO’s discovery signals a new era of astronomy and a new way of understanding the warped side of the universe. Ira Flatow, Moderator Janna Levin Nergis Mavalvala Lisa Randall
On Feb. 11, 2016, a panel of researchers from Perimeter Institute for Theoretical Physics discussed the meaning and implications of LIGO's landmark announcement regarding the detection of gravitational waves. The panel includes Perimeter Director Neil Turok, along with Faculty members Asimina Arvanitaki, Latham Boyle, and Luis Lehner. Science journalist Kate Lunau moderated the discussion. Learn more: Gravitational Waves Discovered, New Era of Astronomy Begins: http://www.perimeterinstitute.ca/node/98308/ Gravitational Waves 101: https://www.perimeterinstitute.ca/new... www.twitter.com/perimeter www.facebook.com/pioutreach
In the last decade we have started to answer ageo-old questions like the age of the Universe and what it contains. Hiranya Peiris unravels the detective story, explaining what we know and how we know it. Watch the Q&A;: https://youtu.be/63JbKXfedRE Subscribe for regular science videos: http://bit.ly/RiSubscRibe Modern fundamental physics contains ideas just as revolutionary as those of Copernicus or Newton; ideas that may radically change our understanding of the world; ideas such as extra dimensions of space, or the possible existence of other universes. Testing these concepts requires enormous energies, far higher than what is achievable by the Large Hadron Collider at CERN, and in fact, beyond any conceivable Earth-bound experiments. However, at the Big Bang, the Universe itself perfor...
This Thursday, the National Science Foundation brings together scientists from Caltech, MIT, and the LIGO Scientific Collaboration at the National Press Club in Washington, D.C. for a status report on the effort to detect gravitational waves using the Laser Interferometer Gravitational-wave Observatory (LIGO). Everyone is invited to join our Google Hangouts On Air stream while we follow the press conference and collect your questions to be answered by specialists directly after the Washington event. This year marks the 100th anniversary of the publication of Albert Einstein’s prediction of the existence of gravitational waves - ripples in the fabric of spacetime. With interest in this topic piqued by the centennial, we will discuss scientists' ongoing efforts to observe and measure cosmi...