LIGO Detects Gravitational Waves
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- Опубликовано: 6 сен 2024
- 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: news.mit.edu/20...
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
In response to ignorant people in comments, the main reasons why this is a big deal:
*1*. It is the last confirmed prediction of general relativity.
*2*. Gravitational waves were thought to be impossible to detect for over 100 years, and by Einstein.
*3*. Many people have dedicated their entire careers, and millions of dollars to this discovery.
*4*. Despite the fact that the waves exactly coincided with the predictions made by general relativity, if, in the future, we detect inconsistencies it could give us clues to new modified theories of gravity, or other theories.
*5*. If we develop more sensitive gravitational wave detectors we will be able to detect events happening within the Milky Way, and it will basically open up a whole new field of astronomy and observational physics.
and while we cannot detect gravitons, this is gives us proof that they actually do exist.
Thank you I've been trying to find out the big deal is. for 30 min. This is great
3 Years later and you just gave me the exact 5 points I needed for my A-Level Physics so thanks!
Is Gravitational Wave affect Quantum Mechanic too?
It would seem quite a few smart people think these measurements are questionable...I'm not convinced what is being detected is "gravity waves". Honest 3rd party scientists are necessary with claims like this, and should not be ignored but confronted with humility.
Albert Einstein found this out around 100 years ago, and he did it by just observing nature and thinking about it, without having the tools to backup his theories by measurements. Just goes to show again how much of a genius he was.
He didn't observe nature or thought about it. It is the equations and mathematics that revealed their existence.
@@HimanshuRohela then how did he come up with those equations?
You are so fat that when you walk ligo detects gravitational waves
@@marcusgarvey7588 Go back to RUclips Kids
Einstein was smart, but ultimately will be proven wrong. Unfortunately LIGO's "gravitational wave" detection is very much debatable, surprised this fact has not been highlighted as much as I (and many other people much smarter then me) think it really should. Sorry, didn't mean to come in and be a "party pooper". Science dont care how we dislike the process of progress though~
being alive to witness this discovery is a great honor
+zaid wadi Is your icon Yui?
+zack hjorth yes it is
Yui is life
+zaid wadi if it stands up to scrutiny. 1/1000th the size of a proton... We can't even standardize the measure of Levi's. What makes anyone think this is more than careful manipulation of the algorithm? We can't even locate protons accurately.
And look at all the effort people are putting into making these videos inspire an emotional impact? If it was a major breakthrough, where's the boring press conference about it? Instead we get these campy inspirational videos.
More proof, more data, less emotional fuckery, then let's calls this a discovery.
you was always going to be alive
I'm hoping for a time when this kind of discoveries will be on the top of the trending list in RUclips.
well 2023 it seems they are getting closer
@@nuna9717 mhm
nerds for the win!
it will never surpase cat videos
This is great news. Obviously, you had this video completed long in advance, since the announcement about the discovery was just made a few minutes ago, and the press conference is still going on as I type this message.
+Physics Videos by Eugene Khutoryansky
Can a Nobel prize be given posthumously ? If so, Bertie One Stone should get it....again.
+onionman4 they cannot
They made the discovery 4 months ago
+steveis1234 yeah, but MIT only posted this video a few minutes after the announcement was made.
Emil Haugen Beats me I guess
Unbelievable achievement. Very honored to have had all three LIGO winners on our podcast.
Bernie Schutz was also part of the team with this great achievement
You have no podcast.
I'm not actually fat, there is just a surplus of gravitational waves around me.
Brandon Wiebe The LIGO is nothing more then a sophisticated HOLOMETER device.
Holometer is a instrument designed to study the quantum character of space itself. It measures the quantum coherence of location with unprecedented precision. And the gravity wave is nothing more then quantum fluctuations and NOT gravitational waves!
@@cymoonrbacpro9426 hopefully we can use LIGO to track down the gravitational waves of who tf asked
@@cymoonrbacpro9426 who tf asked
Can't stop talking about this huge achievement with family, friends and colleges :) Congratulations.
This event was detected September 14, 2015. Now it's February 11, 2016 !! they spent 4 month doing the calculations !!
Most of the time they spent verifying the results to ensure they didn't make a mistake and peer review by other competent scientists world over.
The Experimental Scientific Process in the professional world could even take years. LIGO has the advantage that measurements are easier and faster to see. Expect to see this discovery to get nominated for the Nobel Prize in Physics
+Atlas Enderium Maybe, but Nobel Prizes in Physics are given out to individuals, not groups. The man who designed the detector will probably be nominated if anybody is.
+Abdulrahman Mahdaly No longer will September 14 have the stain of being the day that Windows ME was released. Now it will be known as the day gravitational waves were discovered.
+Professor Ess Nope, thanks to the way the internet works whatever day news outlets and social media picked this "trend" up will be the day.
CALTECH & MIT creators, thank you for having the vision to build this machine. I look forward to learning more about what you see in our universe. It is quite fitting that a very understandable / elegantly designed measuring device confirms the existence of gravitational waves.
I learned about the theory behind this experiment in school as a young man. Honestly, I was doubtful it would be possible to prove this during my lifetime. Thanks to all the scientists who made this possible!
love the eastern beat in the background
When I was young, we just had Six Flags and Disney. Kids today have LIGOLand too.
:| I get it...funny funny you are ;)
😂😂😂
This is an honour for me to witness. What a time to be alive. These people are so passionate and determined at what they are doing, it is honestly so inspiring. Keep up the work, guys. And oh, shout out to my boy Einstein, I know you are looking down smiling. Incredible!
I love how the scientists use the glorious metric system at first and then translate it for people who don't know it :D
It's not our fault that our government decided to educate over 300 million people this way, we have no control over what we're taught in the first few years
I’m definitely proud of the people who made it happen. Huge Kudos.
0:42 dude looks like mike and Walter combined
Lmao
Woah! Last year, people from LIGO came over to WSU to tell us what they were doing. Awesome to see them succeed!
who can dislike this video?
+StarTrek123456 my guess is they are people who BELIEVE something else.
+StarTrek123456 music
+StarTrek123456
ISIS?
+StarTrek123456 I really think there are automatic youtube downvotes... Ive never in my life seen a video without dislikes. No matter how amazing
Has anyone wondered how the ''thumb down'' feature under the videos works, while the ''thumb down'' feature for comments is out of order?
Absolutely ASTOUNDING and I couldn't be more proud of my fellow MIT alumni- this is what happens when you bring the two most brilliant academic institutions in the world together- congratulations to MIT, Caltech, and indeed, humanity!
Respect to you guys ! :)
congratulations from Pakistan !
+ermistan How's Osama Bin Laden doing?
+The Truth depends, which one of them?
+The Truth he's pretty good. sipping tea right next to me.
+Dalton Villanueva try watching the movie 'tere bin laden' its a pretty good movie you'll enjoy it.
+ermistan You really don't need to mention your country.
I have been perceiving the entire universe as one thing for a very longtime. I perceive it as a large sea so to speak. A sea where certain places are more dense than others but everything is still liquid. Often I learn something that increases the probability of my theory; today is one of those days. thx.
To most people this is just another news title, to few others this is a tear-jerking moment. I'm the former, and hope to one day be the latter. All the best!
It is one of the best experiments ever done to prove the theoretical physics of gravitational waves in space-time by human beings. It will open a new era of discoveries. CALTECH & MIT researchers, thank you for having the vision to design, and build high-precision interferometers and to perform such measurements.
i wanna surf that wave
+Kim Jong Fun technically we are already ;-)
+Beyond Psychology
Maybe they'll figure out how to make the board,
and paddle, and see some bigger swells!
Hatch Jerod setting off nuclear blast behind a spaceship is one theoretical possibility that has been proposed. Takes a lot of balls to ride that wave lmao
+Beyond Psychology
4 women are up for a Mars mission. Takes more than that! lol
Hatch Jerod um OK.
It's amazing to think how this could affect our daily life and studies of the universe.
EVETRY PERSON IN THE WORLD SHOULD BE PROUD OF THAT !
Especially Albert Einstein he explained this 40 years ago
+burak kerten lol check when Einstein died haha
i mean 140 years ago lol
+Abuzetun Musab Why did I almost cry when he said that?
+Abuzetun Musab
Yeah, also be proud for the NASA fake moon landings
What we need are 1080 detectors/ telescopes that go out in a swarm, and as they travel a few thousand miles, they would take 1080° pictures, stopping and going until you get to Pluto.
That’s literally the best way to detect light that gets bent or blocked, besides being able to better detect dark matter or dark energy.
1080 points of view, that go about all their arcs, as they go outward in a sphere.
Well probably Zakir Naik is now searching word in his quran to make a claim that quran already saying this 1400 years ago more longer than Einstein
"Albert Einstein said about gravitational relativity in 1916 that finally detect by LIGO now 2016....BUT I CAN TELL YOU BROTHER SISTER THAT QURAN ALREADY SAID THIS 1400 YEARS AGO! SURAT BAQRA CHAPTER NUMBER 6 VERSE NUMBER 9!"
Ligo detected a gravitational wave and i detected a chutiya......
😂😂😂👍
Amazing how it is possible to make a video about gravitational waves, without telling anything about what such a wave is, and how it can be detected.
Roll a canon ball in a circle on a sheet of cloth. Wave like moments are created from the content pushing and pulling off the canon Ball. Now scale it to a Massive black hole rotating around another massive black hole on the fabric of space. The waves generated from this movement are the gravitational movement.
They are detected based on the general theory of relativity.
@@420sakura1 A sheet of cloth is pure matter, and we have no information from any detectors that indicate that gravity is something material. Nor can we register a wave based on a theory. Unfortunately, this is an easy conclusion, like so much else within the scientific belief system, where it is important to present the belief as proof, without there being any proof. I am not saying that a wave was not detected, but what I am saying is that we do not know that it was a gravitational wave.
Further proof that Einstein was one of the greatest men to ever walk this Earth.
They didn't detect anything, they just pulled a slippery slope.
It's amazing. We're just organisms on a tiny planet, but we can fathom things that are billions of light years away, billions of years old.
now where's my hoverboard?
two black holes merging together, literally, nearly the speed of light to produce a bigger black hole. HOW COOL IS THAT!!!!!! Best
how do you fund a project like this!?
+Higgins2001 nice 1
+Higgins2001 They say it right at the beginning of the video. 0:39. NSF, National Science Foundation.
Kojisan1 You think NSF footed the entire bill? And over how much time did they have to build, and how hard was it to hit continuous funding goals?
I'm interested in details, because such giant, expensive projects for pure scientific research probably don't just get fully paid for in one check from one foundation - however such projects are incredibly important for furthering human knowledge.
It's interesting to learn how these projects not only get launched, but how they are brought to completion :)
+Higgins2001 Tax payers money, but its worth it.
+Higgins2001 About funding ... How much cost one aircraft carrier, ICMB or ICMB platform like a nuclear sub ? The world would be a much better place if a superpowers had act accordinlgy to that fact. But it unfortunately never happens.
Imagine how much more we will know about the universe in 50 years. People say my generation is too late to uncover the world, and to early to uncover space. I'd say we're just in time to uncover the universe.
So does this mean that anti-gravity devices or ships can be created now...
+pavolon nope. :/
+undo.kat oh so yeah... np let's science the shit out of this bitch lmao (sarcasm)
+undo.kat Well, it's 1000 times smaller than the size of a proton this far away from the gravity source. Close to the black holes it's enough to tear your atoms apart.
This adds more evidence to inflation theory which means infinite number of universes.
Fred Marz explain? :-)
I'm really excited for more exciting new discoveries to be made in the next decade
I am so hyped right now.
Duuuude props to funding this for 21 years....
I'm so happy God put these things for us to discover. Makes me smile seeing us all so happy in the midst of a hellish world.
Ever wonder why this world is hellish?
+Colin Vecera cuz sin
Faith in humanity restored.
+Radi Bear (Radioactive TeddyBear) Because of religion, you half-wit
RemixedVoice I agree somewhat, but look at your comment again. Seems a bit hypocritical, don't you think?
I went to ligo for a field trip just a week ago! I don't know I just feel really proud since they discovered this and I live like 30 min away from Hanford,WA
What progress has religion gave us so far?
Nothing but blood bloody murder
Its not what has religion contributed, but when is science gonna catch up with the Authentic values and revelations
thet have stood the test of time in religions/spiritual forms.....Quantum mech...we affect what our awareness focuses upon..."what you think so ye are?...
...........reckon the earths conditions and Capitalism
............................................................. are the direct affects of our collective thinkin?
Genocide
If time travel is possible I'm going back with all this info and giving it to the greatest minds.
0:40 - Walter White's continuing battle with cancer
+.ENGLISH PROFICIENCY i lol'd
I really admire you people. I’ll never be able to fully grasp this type of information but it amazes me.
Why would anyone dislike this video?
Uninteresting people?
Dumb blonde girls that think the waves will mess up their hair
+steveis1234 lmao
+steveis1234 XD
Most likely flat earthers
The LIGO detector was shape shifted by the signal it was built to detect as the means to detect the signal it detected. Is it just me or is this detector absolutely unique in its' detection method?
154 Newtonians
thanks to all the people involved that dedicated their lives to let us understand the universe
so what does all of this mean?
+Lyle Mitchell (Nortio) From what i know, Gravity is a physical thing, and therefore could possibly go faster than light, or not, but who knows? its all a bunch of science stuff
Basically means we can possibly time travel now
+byRamzy don't see how gravity has anything to do with time travel but OK.....
+Lyle Mitchell (Nortio) The biggest one beyond anti-gravity would be harnessing these waves and creating free energy.
+Peter G OK that makes sense. a lot more than time travel. awesome
Supercomputer animation of the two black hole collision produce FAKE gravitational waves.
I love discovering God's work. :)
+General Sarasota i love hating idiots
Me too
but you cant make a comment like this on any science channel without the heathens bearing down.
Feel the intelligent pull, too? RAmen.
EHW2 Yeah people like René Plougsgaard will always express evil.
+Wenguang Jiang I love your comment
Damn this brought tears to my eyes for some reason. It's like the Universe is singing a song to us and its the first time we're hearing her voice. It's beautiful.
This reminds us how intelligent Einstein was.His theory of general relativity is proven right.Guy's dont you think Einstein is a man from future?
.
+Faizal Evans That'd explain how smart he was, but we'll never know and saying that can bring out a whole bag of conspiracy theorists
he was a jew. that's why he could figure it out. We'd all be in the dark ages if not for the jews.
+Hatch Jerod
Thank you for the insight.
Also, I'd like to point out if Muslims didn't exist then we wouldn't even have algebra, so basically if not for the Muslims Einstein wouldn't even be known right now.
We can discuss the piggybacking method on a different page. Shouldn't clutter this one. Just name the page.
alijahshad02 just playing homeslice,
The Muslims have definitely had their golden age, as well as the jews under Saul, David, and Solomon. And the egyptians, And the Chinese have had theirs, as well as the Incas, Mayans, and Aztecs who also used algebra as well. God allowed the Muslims to be the smart ones in the right place at the right time.
All of those days are over. The state of the world exactly matches what Jesus said the world would be like before his return (Matthew 24 and Luke 21).
I remember reading the news of this, it blew my godamn mind, and it blows my mind that people don't want to take part of it... Or to remove funding from these projects. To say this is a prodigious achievement is a understatement.
The horribly affected music undermines the credibility of these conclusions. Use of music to elicit an emotional reaction and dissuade critical examination is a cheap parlor trick and calls into question the judgment of these scientists.
Well, I never said the scientists personally played and recorded the music (but the video was nonetheless produced by MIT).
Respectfully, I think your comment demonstrates my point. Your "gtfo …" comment suggests you are offended by my criticism and observation, no doubt because of your emotional attachment to the subject matter of this video.
But a fundamental element of the Scientific Method is that, through publication, the findings can be subject to criticism and vetted through the crucible of peer review. This serves, among other things, to eliminate any biases that may have influenced the results. One of the invaluable things about Science is that Scientific Theories are as objective as humanly possible.
Scientists welcome new viewpoints and Science itself demands criticism. That's because the ultimate goal of Science is to find the truth. If someone criticized the findings in a technical way (as in, hypothetically speaking, "The data analysis does not properly account for statistical deviations observed in prior optical Michelson-Morley type experiments") a proponent wouldn't say "gtfo." Rather, a good scientist might dismiss such a criticism by explaining how it was considered or perhaps accept the criticism and reexamine the data. If wrong about something, a scientist might naturally feel upset about it but could still take comfort that, because of her efforts, Science is closer to the truth. And it's a good thing that the accuracy of Scientific discoveries does not depend on any scientist's susceptibility to being offended.
Of course, my criticism of the music is not a criticism of any of the science behind these findings. (I think that's what makes it funny.) And I understand that this video is more of a PR piece than a formal scientific presentation.
Nonetheless, I believe that all scientists (generally) and MIT (specifically in this case) owe a special duty of care when communicating scientific discoveries to the public.
Scientific understanding of the nature of the Universe greatly impacts each and every one of us in countless ways. Indeed, science has changed the world. With this in mind, communications to the public should reflect how indispensable objectivity is to science. And such communications should further reflect that any particular conclusions being presented were reached as objectively as possible.
The musical soundtrack to this video flies in the face of objectivity. Actually, the very purpose of music in film is to illicit an emotional response and enhance the subjective experience of the viewer. Filmmakers and composers are fully aware of the manipulative power of music, which is why it is such an effective tool in their creative process. In a way, the use of music in film is to Create bias - the exact opposite of Science's aim to Eliminate bias. Therefore, scientists (and people speaking in their behalf) should be exceedingly careful about using music in scientific communications to the public to avoid any suggestion that the viewers are being manipulated into a particular point of view.
Plus, this particular music is just bad. It's just some kind of superficial, feel-good, and pretentious fluff. There's nothing creative or interesting or complex in it's composition. The arrangement is typical. The production is boring and polished. There's a higher level of musical accomplishment in the "sound" of the gravitational waves themselves.
Let me just add one more thing, just to be clear: I'm perfectly ok with scientists who use interpretative dance when engaging with the public.
3:28 Ligo also works under Ubuntu :)
Einstein was not human, impossible, think it was sent to give a direction to human. As? I imagine and I detail one thing never seen and she really exists...
The universe started with a FLARP, and then a BANG. And it's only the beginning.
What I wonder though is: What are the implications of this?
I don't like to be a cynic but this discovery doesn't seem that important to me, at least theory-wise. It only confirmed our current understanding of the universe, not expanded it.
+Spliter i got this comment from reddit, user /astrokiwi
Two big things!Firstly, General Relativity has always predicted that gravitational waves should exist. However, they are very weak, and even the most sensitive detectors should only detect the most dramatic ones - the "chirp" of gravitational waves that comes from the merger of two neutron stars, or even better, two black holes.Recently, the LIGO detectors have been upgraded so that they finally have the sensitivity to detect the strongest of gravitational waves. And a few months ago, both sets of detectors (one in Louisiana, one in Washington state) detected a chirp of gravitational waves, fitting exactly the pattern of frequencies you'd expect from the merger of two black holes about a billion light years away with a mass of about 30x our Sun each.This detection is a massive confirmation of General Relativity. It would be worrying if we didn't detect anything, but this really confirms that our understanding of gravity and the universe is correct.Secondly, this opens up an entirely new field of observational astronomy. Astronomy works mostly through telescopes that observe different types of light waves - visible light, infrared, x-rays, radio waves, etc. But gravitational waves are an entirely different thing, and they give us a wholly new point of view on the universe, letting us see things we couldn't see otherwise.For example, something that's 30x the mass of our Sun is a pretty small object to see at a distance of a billion light years! Black holes are also really really small (these are like 90 km across). So we detected something less than 100 km across that was a billion light years away! And that's something that would be pretty much impossible to do with any other current method.It really is a wholly new window into the universe.
www.reddit.com/r/explainlikeimfive/comments/459boe/eli5_why_is_todays_announcement_of_the_discovery/
In my humble and respectful point of view, this discovery is important because, as you said, it confirms that the knowledge we had about this was correct. Can you imagine being wrong? Can imagine needing to create new theories like this? I mean, I don't think that happens every day.
+Spliter I think it's important that the theory in and of itself was confirmed, as we know that general relativity is (as far as we can measure) correct. Knowledge for the sake of knowledge is a good thing. Practically, this discovery welcomes a new era of research via gravitational waves. More thought and money will now be put into experiments and projects based on the idea now that it is confirmed.
No one knew what made gravity tick before this discovery. Surprisingly enough, it's one of the least well known fundamental forces in the Universe. Now we know for sure that gravity acts like a wave. It's huge news.
It will give us a basis on how to make FTL transport, no joke
It is mind blowing that the collision happened literally billions of years ago
1.3 billion
No they didn't.
I am honored to be alive to witness this amazing discovery! HI everyone from the future!
hehehe FUCK NASA and LEGO
Lustration well let's see you find the only fucking thing in the universe that can MOVE AND STRETCH the universe other than itself...
00:28 yes, LIGO is cool, but props to the guy picking up an 88 pound mirror like it was nothing!!😂
fun fact, kip thorne was the dude who helped write the science involved in interstellar.
And the world was divided into two: People who had no idea what the heck all this means; and people who were overly excited by the new scientific breakthrough.
That's MIT you got there! Congrats you guys :D
from Philippines
Most other measuring techniques use the electromagnetic spectrum - this is a totally new way to observe the universe!!
we need a documentary for this, like higg boson's particle fever
Its really an exotic and astonishing discovery, which can freeze you for moments !
One word to say "Hats off, Guys "
Found this after 5 years but still feeling amazed .
Today we are able to observe many of the things that we are able to observe only because Einstein was so smart to think the stuff up in his brain without ever having the chance of really looking at the things he theorised about. This is as inconceivable to me as the size of the universe itself. How smart Einstein was!
Einstein would have rejected this data.
*The case of mistaken identity* please do not remove this comment! I Challenge anyone to refute these statements!
The LIGO (Laser Interferometer Gravitational-Wave Observatory) project when analyzed is actually a seismic device which measures vibration in the Sub atomic scale. The reported chirp signal detection that is declared to be gravitational wave could be a signal related to quantum noise.
*What is quantum noise?*
Quantum noise may be observed in any system where conventional sources of noise (industrial noise, vibrations, fluctuations of voltage in the electric power supply, thermal noise due to Brownian motion, etc.) are suppressed and yet random vibration can still be detected. This phenomenon is considered to be part of the ‘quantum foam’ that is ever present, which cannot be filtered out.
This being a reality of the physical world, *it becomes plausible that the chirp (gravitational waves) is actually related the quantum noise phenomenon and not with a cosmic event, such as black holes a neutron stars.*
*What is the Quantum foam?*
Quantum foam or spacetime foam is the fluctuation of spacetime on very small scales due to quantum mechanics. The idea was devised by John Wheeler in 1955. Evidence for it was predicted back in 1947 by Dutch physicists Hendrik Casimir and Dirk Polder. Fermilab senior experimental physicist Don Lincoln explained the so-called "Casimir Effect" and its effects have been measured.
This RUclips video demonstrates what quantum Noise looks like ruclips.net/video/PJHAXQJMfxE/видео.html
*Conclusion The LIGO detection is an exercise in bias confirmation.*
The LIGO chirps are actually signals extracted from sea of Quantum noise and misinterpreted as gravitational waves.
The LIGO chirp www.google.com/imgres?imgurl=https%3A%2F%2Fwww.ligo.caltech.edu%2Fsystem%2Favm_image_sqls%2Fbinaries%2F45%2Fmedium%2Fligo20160211a.jpg%3F1455158181&imgrefurl=https%3A%2F%2Fwww.ligo.caltech.edu%2Fimage%2Fligo20160211a&docid=Er2JBzynHDi6JM&tbnid=l3PJOKZ9pFJdZM%3A&vet=1&w=480&h=600&hl=en-us&client=safari&bih=722&biw=1112&ved=2ahUKEwiVspnTmbrmAhWJMd8KHVmHDlsQxiAoAHoECAEQFA&iact=c&ictx=1
*Faulty collaborating evidence:* Please do not remove this comment.
The collaborating evidence presented for these gravitational waves is gamma ray bursts that seem to be correlated with the signal chips. But there is a problem with this evidence, that is, the difficulty in Establishing an ironclad cause and effect relationship between commonly occurring gamma burst events and gravitational Chirps. Every day, the sky lights up with a spectacular flash of gamma-rays coming from deep space. The brightness of this flash of gamma-rays can temporarily overwhelm all other gamma-ray sources in the universe. The burst can last from a fraction of a second to over a thousand seconds. The commonality of these GammaRay burst makes it impossible to connect these events with the GW signal with any high degree of confidence.
And there was another misconception, that is, that gamma ray burst are generated by gravitational mergers, this would be incorrect, for it is known that gamma rays-bursts are Produced by plasma discharges not only in space but also here on earth, by lightning strikes. For Scientists have discovered a connection between lightning strikes and two kinds of gamma-ray phenomena in thunderclouds.
The unexpected gamma rays source ‘The Sun Is Stranger Than Astrophysicists Imagined’; Gamma radiation from the sun was thought to come from cosmic rays interacting with the sun’s magnetic field and then colliding with gas molecules near its surface. But this long-standing theory doesn’t account for the observed strength and other features of the solar gamma-ray signal. It must be noted that none of this phenomena is related to gravitational merging. This evidence is weakening the assumption that Gamma Ray burst are Associated with black holes or neutron stars dynamics.
Nice post.
"According to General Relativity, a passing gravitational wave can “shrink” objects and change their lengths. On this basis, the Laser Interferometer Gravitational-Wave Observatory’s (LIGO) designers used a modified Michelson interferometer, thinking that gravitational waves could be recorded by using laser beam interference to observe the interferometer’s arm variations. However, the LIGO detectors have a basic problem: The light fields are also affected by passing gravitational waves. Thus, when one gravitational wave “hits” LIGO’s interferometers, it does not only “shrink” the interferometer’s arms, but in fact, distorts its own space-time fabric, also “shrinking” the light beams. This means that no phase difference can be observed in the output of Michelson’s interferometer, thus, gravitational waves cannot be recorded using this kind of equipment."
Global Journal of Physics Vol. 4, No 2, May 17, 2016
gpcpublishing.com/index.php?journal=gjp&page=article&op=view&path%5B%5D=461
How fantastically passionate those scientist are!
It amazing how fine the measurements are. the sensitivity :). Kudos to the LIGO team
Indian classical music in the background!! Sounds good.
Two objects that can not be observed, whip up space with so much energy they send off one "gravitational wave". Not a series of waves or a pulsing cascade of waves, just one burp recorded on the massively expensive LIGO setup. If two black holes were orbiting each other, when they were close to joining and if they were shedding off energy through gravitational waves there would be a bunch of waves detected as their orbits decreased until they collide.
What a wonderful and monumental achievement! Congratulations to all on the team.
Something doesn't add up as around 0:33 min it is said that the mirrors weigh 40 kg, while 3 sec later a technician holds this 40 kg (!) mirror between his two hand, apparently quite effortlessly. Try that yourself.....
In the video it was mentioned that you release gravitational waves and then detect their effect on the light and all that was explained was that a special laser and mirrors were constructed but they didn't talk about what is emitting these gravitational waves. How are they releasing or emitting gravitational waves in order to detect their effect on the light from the laser?
What a great time to be alive.
Prof.Nergis Mavalvala we're proud of YOU.
MESSAGE FROM PAKISTAN.
We are at the event horizon of new paradigms in science
A pond is water, so when it ripples, it's H20 molecules that ripples. But what is the fabric of space-time? I'm assuming there's a physical definition, as we are after all, talking about physics.
You are asking to much of modern "physics". They gave all that "real" stuff up 100 years ago.
I saw a question answered by Professor Jon Butterworth on gravitational waves that are created inside a black hole's event horizon:
"The gravitational waves that escaped the merger and eventually traveled to us were produced outside the event horizons of the original (and final) black holes, so that they are not coming from inside the event horizons. Since gravitational waves only propagate at the speed of light, they cannot escape from inside the event horizon of a black hole. "
But because gravitational waves represent a disturbance in the fabric of space-time itself, and this includes the fabric of space-time inside the event horizon, I don't see how it could be contained by the black hole's gravity. Can you help me understand how this happens?
+David Butler
I don't know if I got your question right, but I will give it a try ...
Since from inside the apparent event horizon nothing can escape, not even light or gravitational waves, they will not reach us, because space-time inside the apparent event horizon is warped so much that it pushes energy faster than the speed of light towards the center of the black hole ...
space-time falls towards the center faster than the speed of light, taking along with it the gravitational waves ...
Is this what you wanted to know?
+CeaoS Sort of. But it is the warp inside that is changing with gravitational waves. It sounds like a circular argument to say 'changes in the strength of the gravitational field' cannot move out beyond the horizon because of the strength of the gravitational field'. Do you see the problem I'm having.
David Butler
David Butler
the fabric of space time can warp and stretch faster than the speed of light, thus, when stretching, it can take a part of itself and leave it behind so much that it will never reach an outside observer ...
I don't know how to explain simpler than that :)
CeaoS Sounds simple, but it doesn't make any sense. What evidence do you have for the statement "the fabric of space time can warp and stretch faster than the speed of light"?
it's a memorial moment , it opens our eyes to new side of universe
I'd love to see a video that compares and contrasts LIGO with Michelson-Morley.
I would love to see Sagan's face as well on this discovery because he was well educated on Einstein's theories...
LIGO basically identifies its own infrared waves not the gravitational. The idea of black hole is wrong as well if we know the root of gravitational energy.
Oh man, what a wonderful time to live in. First the higgs boson, and now gravitational waves. Looking forward to seing what's next. :)
they whirled about each other at half the speed of light and finally merged.
This is a profound discovery. Science and the Universe get re-defined again! #bravo
3:59 It's monumental, it's like Galileo using the telescope for the first time.
i think what we detect at ligo we should call it gravitational tsunami waves as they are produced by two black holes colliding together giving ripples in fabric of space time, and there are continous gravitational waves going on like waves in ocean, as these waves are very small we cant detect them with current technology, i will say there are gravitational vibrations infinite frequency one due to infinite stars and planets moving on this fabric of space time.
I'd like be smart enough to understand all this . I'm still excited . Go science !
Can someone explain to me how the scientists knew it was 2 black holes that caused the ripple. Were they observing the black holes merge at the exact moment there was a movement on the detector?
Because they were measuring it with a couple -or more- other detectors around the World. So if you have 3 or more detectors, you can find the exact place where it occurs etc.
It's correct to say that this discover is a work between the 2 LIGO team in USA and the VIRGO team in Italy.
And contributions from 12 other nations.
+Venkat Minnikanti I agree
+Giorgio House its events like these that bring mankind together. Discovery of Higgs Boson, landing on a comet, visiting Pluto, now this.
It's a great day for mankind!