Gravitational waves: A three minute guide
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- čas přidán 10. 02. 2016
- It's almost exactly a century since Einstein first predicted the existence of gravitational waves. In this Nature Video we find out what they are, and how scientists are searching for them, in an attempt to prove Einstein right.
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What a clear and precise explanation. So easy to follow. Thank you!
This video is so good that the RIGHT EYE of the guy reporting is experiencing a gravitational wave while the video was being filmed.
looks like sloth from the goonies
HA!
+dilanka LeyeGO!
+dilanka ROFL im fuckin done loool didn't even notice it the first time
+dilanka I immediately noticed it and thought he had a small singularity.
Amazingly clear even to a person completely new to scientific jargon. Really astonishing. Thanks so much for allowing me to understand all this.
We have confirmed what was conceptualized by Einstein a 100 years ago!
+Ashwin Kumar k Well we haven't confirmed it just yet
djancak Alright since apparently you're a little too thick in the head to understand what people mean when they say "We" they mean "we" as in the human race has no yet discovered XXX thing, humanity as a whole; in the word "we" But I mean, nice attempt at looking like a moron I guess, lmao!
+djancak I am your king you should clean my feet
+Joe Chang rationalwiki.org/wiki/Common_sense
+Ashwin Kumar k It wasn't his theory, he just gets all the credit for it.
I myself made a video explaining the gravitational wave phenomenon in celebration of this enormous leap in our understanding of the universe :D Einstein was such a brilliant guy, all of his theories has been proven correct. Even things he considered mistakes were found to be correct
That's an insanely good unintentional transition at 0:06!
This is the most elaborate video on this theory so far.
Amazing and simple explanation sir
Well done - excellent explanation!
Hey, I am a student participating in Breakthrough Junior Challenge, may I know whether the footage at the start 00:00 to 00:03 copyrighted? And can I use it in my competition? I saw it in quite a lot of videos.
great video
Interesting..thx
This is the biggest news of this century. Last century's was Einstein's theories of Relativity and the Photoelectric effect. Einstein still makes the biggest news hundred years after he's gone
EinsteinS both him and Mileva made the theory and papers
The universe is alive and has a heart pulse... just like all of us :)
+dim slip YESSSSSS !
+dim slip The universe also sees itself from our eyes because we are the universe.
+ryan foot And let's not forget the stardust!
+dim slip sure it is
This is the reason why aliens want talk to us.
I read other day comment that said that mirrors are portal to parralel universes, and guy was so ensured in that statement that he said that we can't disapprove that.
How do we suppose to evolve as a species when there is so many people still believing in God, so many people claiming that evolution is a lie and that landing on the Moon was fake? How?
great time to be alive! Realy made my day
i didn't understood how the distance will change of the two mirrors ?? as both of the mirrors are on earth but due to gravitation waves only space time fabric will stretch or wrap?? how can it effect the two mirrors's distance ??can anyone explain me??
Amazing to know how simple a concept the LIGO is based on.
Amazing
About time :-)
It's amazing what we will build to answer one simple question that really doesn't have much of a significant impact on the world today.
Electricity had no impact when was discovered, but you wouldn't have written this comment without it. Maybe we haven't found any application of this yet, but depriving future generations of new technologies and advancements is very egoistic, don't you think?
good video
great
Sorry if my question is dumb, but aren't light in the laser beams contracting as well as surrounding matter, eliminating all possible differences in travel time that we are looking for?
+djancak I guess this is why the two pipes are 90°
+VAran22 that's why the beam is split in the other direction, both halves will be morphed at slightly different times causing them to be out of synch when they recombine, allowing a signal to be detected!
+VAran22 gravitanional waves dont change the size of the lazer beams(if thats what you mean), it makes space-time to expand and then shrink again making the dinstance between the mirrors in the LIGO detector bigger and then smaller, so the time it takes for the one lazer beam to reach the mirror is different for the time it takes the other lazer beam to reach the mirror, so one lazer beam can pass through the mirror into the detector because the other lazer beam wont have enough time to reach the other lazer beam and cancel each other.
+VAran22 I don't understand the equations of general relativity; the math is beyond me, but evidently a bottom line is that an effect of the gravitational waves on the "test masses" or mirrors results in a net effect on the phase of the returning light beam from the laser.
Objects cause distortion of space AND gravitational waves. Gravity is the result of space trying to push itself back together and gravitational waves are caused by objects moving. Both are caused by mass, but "gravity" and gravitational waves are 2 different things.
See you Sydney
very well explained!
ligo????? wow this is magic,nearly, and i am an engineer and MSc.
По видимому, так же как и электромагнитные взаимодействия нельзя рассматривать отдельно.То-есть как магнитные и электрические. Подобно этому, я считаю, что и гравитационные поля и био-поля ВЗАИМОПОВЯЗАНЫ!!! Это можно очень хорошо наблюдать в природном "Биогравитоне" -городке на западе Украины - Каменце-Подольском. Там каньон ("минус-масса" камня опоясывает остров с людьми(фауна) - Старый Город) почти замыкаясь на турецком мосту. По всему периметру кольцо-антенна окружена зелёной лесопарковой зоной(флора) создающей разность биопотенциалов. В результате создаётся мощнейший генератор ВОЛН ВЕРОЯТНОСТИ (Де Бройля). И события развиваются очень интересно, непредсказуемо для непосвящённого, а порой чудесно и восхитительно для позитивно настроенных, или крайне трагично для пессимистов. Налицо эффект усиления БИОПОЛЯ!
This guy is a proof of a gravitational wave
wasnt this already know? for example, the movie interstellar. didnt gravity affect space and time? which would also back up this claim? or was it just hypothesized and now theres proof? because this seems like its already proven by that concept (as demonstrated in that movie)
Aren't there too many factors unaccounted for, a lot of things could cause this difference, so I don't understand the point....
Which once again shows what a tremendously innovative and genious man albert was
💚
cool
I thought the black hole sucks everything. I mean everything, even the information , lack of information, nothing and void as well. So how can a gravity wave , which is something - since it is just measured - escape from the black hole and travel with the speed of light from it?
And why the two dimensional rubber model is still used as a demonstration. It ONLY works in a vertical gravitational field?!
music please?
is there something wrong with my macbook retina screen? seems bit curved :P weird
We got em
So in principle one could make negative interference with gravity where the gravity of two massive objects cancel each other out?
+itsjustameme The profile picture is perfect for this.
+itsjustameme No, because gravity does not require a gravitational wave.
B. Xoit I thought that the whole point of this video was to tell us that it did? Am I missing something here?
+itsjustameme, According to General Relativity, mass distorts space-time, i. e. makes it locally non-flat. The phenomenon that we perceive as "gravity" results from that curvature, according to the theory. That does not require a wave. It's analogous to how a steady, unchanging electric field can exert a force on an electrically charged particle without there being any light wave. The point of the video is that gravitational wave propagation is possible and has now been detected. The mass has to be accelerating in order to send out a gravitational wave. Similarly, accelerating an electrically charged particle sends out a light wave.
The fact that there are people in 2017 that believe the earth is flat and deny any evidence proving otherwise astounds me
Great to know..LIGO is a success and successfully logged Gravitational waves
so properly explained
Just very Recently a few People tried to demolish the Theory of Einstein !
Now they know they were wrong !
When did the two black holes collide?
Millions and millions of years ago
😅😅😅😅😅😅well information good show you 😅😅
amazing !
I have always wondered what evidence we have that gravitational waves can't move faster than light.
+Jared Jeanotte Well iirc this experiment would give us the speed of gravity (?)
according to Einstein theory however, the speed of gravity is the speed of light and from the perspective of earth if the sun was to disappear the gravity would disappear at the same time.
+Jared Jeanotte we know that gravitanional waves travel at the speed of light because the LIGO detector in the state of Washincton first detected that gravitanional wave and then 7 milliseconds later the LIGO detector in Louisiana detected it as well, and it would take light(which travels at speed of light at 300.000 km per second) exactly 7 milliseconds to go from the one detector to the other.
+Γιώργος Μπούγιας thanks, that answers it!
+Jared Jeanotte It's interesting how much time elapsed on the wave itself... Because it bend time, maybe we can surf on this waves???
+Γιώργος Μπούγιας
So you're telling that Louisana, Washington and the source of the gravitational wave are exactly collinear in the space?
I don't get it. The light beam belongs to the fabric of spacetime, and therefore should not be independent of the gravitational wave. but anyways ...
Light does not have mass and so I don't think it's affected by gravitational waves, keep in mind I'm not an expert
Bellissimo video, educativo da tutti i punti di vista fisici, godo
some others soures for learning the gravitational fields I Am studentC
Does a gravitational wave effect the length of a day?
A čo torzné vlny ?
Of course, Inflation is also perfect theory ;) It is really great time !
I just can't see eye to eye with this guy.
-👽- FORTUNE OF WEALTH = TIME AND SPACE .
THE BIG BANG WHAT ITS TURNED INTO ?-
STAYING ALIVE IS ME AND MY COSMIC GIRL -4- ALWAYS BECAUSE AND NOT BECAUSE
eye... EYE!!!
Sooner this video will be trending....
+Nimesh Jaiswal Sooner huh?
@nature video Please add Milevas name and give her the recognition she deserves.
don't get carried away due to watching season 1 of Genius. Mileva's help is just a speculation, we really don't know if she even helped a tiny bit. The series just added that because it's a series and that was romantic. It's not facts, it's speculations. My guess is, since Einstein didn't include her even when they were together, she didn't actually contribute. We simply don't know, we only know of Einstein's work as his work.
Are gravitacional waves particles.?
No,its a form of energy
What I miss in this video is the explanation how the wave was recorded as sound, rather than visually. Otherwise great video!
Maarten Das Was it revorded as sound? o.O that is interesting. I thought they just sum the light waves
He was right.
LIKE OUR OWN GALAXY , ROTATING AROUND THE CENTRE SAME AS OUR SOLAR SYSTEM .
1:14 "...simple piece of kit."
LIGO is a 4-km vacuum tube. Lol.
But anyways, amazing explanation. :)
what about earth's magnetic field that may distort laser beam?
+Govind Bisen EM Fields don't interact with lasers (as far as we can see on earth)
It only repels the solar wind from our Sun.
WE HAVE HAD THE WORST OF GRAVITATIONAL WAVES
how do they know it was from merging blackhole?
that's why it is called science
+TheRock2013 they had used many computers to model what a black hole merger would look like, and the signal matched so perfectly that at first they thought it was a prank, and someone just inserted the signal.
+TheRock2013 With Math. What the signal should be was determined from Einstein’s
equations long ago. The signal LIGO detected
matched exactly with what was predicted.
+a1c4pwn thank you
+TheRock2013
Because they don't know what else could produce such wave form signature
Ugh this century man.
This guys eyes have been distorted by gravitational waves
you look bit like leonard hofstadter
his eyes are all gravitaized
Detected ?
Gravitational waves discovered in year 1972/73 in Danzig / Polen. Photos of gravitational waves under homepage www.gravitational-waves.eu
Please turn the CZcams video on Russian language if possible
Has anybody even proven that gravity is created by mass? Could it be that what they say they are picking up, is just cosmic electro magnetics/wind ... Does this help to prove the ball earth or anything?
+OGW it cant be a coincidence that the more mass an object has the more stronger its gravity gets(the more it pulls different objects to itself)
+Γιώργος Μπούγιας It doesn't pull objects in, technically they fall in.
Hazza SrZ thats exactly the same thing
What difference will it make? What will it prove? What will it change?
+Deke www.theweek.co.uk/space/69480/what-are-gravitational-waves-and-why-are-they-important
+Deke Apple is going to use it in the iPhone 7 to make your porn load faster. There happy?
+sycois No, not happy. Could care less actually. Also I hate Apple.
+Deke well, now that we know we can measure gravitational waves, because we have confirmed there are gravitational waves to begin with, there could potentially be a slew of new technologies as well as a whole new field of study in Astronomy. Gravitational wave science is the future. A technological revolution could very well be within our grasp.
In the short term, it gives us a better understanding of how our universe works and confirms that our LIGO buildings work lol
+Deke Also, the expression is "couldn't care less". Could care less means that you still care. Cheers!
ok, I have a question for you physics poeple, I'm not a scientist(at all) but does the fact that the general relativity theory has been proven,also proves Einstein's vision or idea of time?
and what was his vision/idea of time? iirc, his theories imply time is sort of illusion, and only concept of _spacetime_ has a true meaning
+dxdx666 so his theories of time being an illusion were included in general relativity or was only the space-time dimension included?
+darkmaulOI
I'm not positive he said exactly time was an illusion, but that concept of time as usually perceived by people (and scientist before him) was wrong. Theory of relativity (both special relativity and general relativity) deal with that problem by introducing concept of a spacetime.
+dxdx666 ok, thanks for the info, one last question: I've look at Einstein's famous"box of time" and I dont reallly understand if he thought that the future is already "written". does he? and if yes, does the space time dimension proves that?
+darkmaulOI
I didn't read "Box of time" so I can't know what exactly he said in that book. Can you quote the sentences about already "written" future? That doesn't sound quite like Einstein. I have read his books "My Theory" and "The meaning of Relativity". Nothing like that in them
Sad gravitational noises
I have heard the earthquake also causes such waves. May be something deep inside the earth has moved!
Exactly! but they have to justify the millions spent.. so yea just play along
+aqib javed The waves from an earthquake wouldn't be the same frequency as the waves from 2 black holes colliding. I know you're trying to convince yourself you're smart, but you're not.
+Hazza SrZ Black wholes! alright i agree you are smart
aqib javed typo relax.
Those two black holes are like " yin and yang"...the kung fu symbol...aren't they??
Does anybody else see Leonard from Big Bang Theory here?
So LIGO was built to detect "gravitational waves"? Did anyone ask for a definition of gravity before that particular cheque was signed?
Io boa
No wonder they called him Einstein, he was so smart!!!!
that was his name.
I realize this could be a joke but these days its hard to tell
Miguel Sosa really guy?! Who doesn't know that.......
Tim Caudle you'd be surprised
YOUR EYE IS EXTREMELY CREEPY
Three mins of my life I will never get back sucked into the black hole of stupidity.
wow ur deap
Centrifuges make gravity waves on anything you put in them, you use a Newtometer to measure the Newtons of Force it creates and an atomic clock to confirm the time dilation of it. I can make a gravity wave in two seconds with some lab equipment and you needed a black hole? If you haven't figured out light is a gravity wave, you do not understand bent space.
He looks a bit like a wood elf from skyrim
Cute, now how do we make a bomb out of it?
how do disturbances in laser beams fired on earth prove gravitational waves from an infinitely distant hypothetical convergence of two black holes?
+Råb Technologies You don't expect to understand 10 years of physics studying on a youtube comment, do you?
+Råb Technologies nowhere near infinitely distant. 1.3 billion light years away. fucking enormous compared to our day-to-day lives, but keep in mind the observable universe is 98 billion lightyears across. this was just down the block, astronomically speaking.
The experimenters refer to the mirrors as "test masses". Therefore, the thing they want to measure is the movement of the mirrors. That is the purpose of the interferometer. Whether the waves partly cancel the interferometer's ability to measure that movement by affecting the laser beams, I don't know. But clearly they wouldn't be expected, based on General Relativity, to wholly cancel the distance-measuring ability of the instrument.
This is awesome NEWS! Congratulations to the team that verified Einstein's theory! (Can we say NOBEL PRIZE!)
BLACK HOLES ROTATING AND PULLING IN WHATS AROUND IS SAYS THAT THE UNIVERSE IS ACTING IN THE SAME WAY = ROTATING AROUND THE CENTRE OF THE BIG BANG .
Does it means that Einstein got the Sink Holes in his toilet 100 years ago?
Make a meal with the ingredients. Where is the raw materials?
Enjoy your meal.
can this be weaponized?
+aaaaaaa Definitely not. The gravitational waves are caused by enormously gigantic masses and the detectors are so far apart and precise because of the minute effect it has.
Give it time
+aaaaaaa LIGO essentially a gravity wave "telescope" (detector) so it can be weaponized as much as any other telescope can the chance of which I can pretty much say is zero.
+aaaaaaa
Sure. When we become a *Type III* civilization, it will be a piece of cake. Humans would be able to throw stars at neighbouring aliens because they are playing the music too loud. But I would not hold my breath.
+aaaaaaa, probably not weaponized, but as to artificial generation (which I found very surprising), here are a couple of references from Wikipedia, neither of which I have followed:
Braginsky, V. B., Rudenko and Valentin, N. Section 7: "Generation of gravitational waves in the laboratory", Physics Report (Review section of Physics Letters), 46, No. 5. 165-200, (1978).
Li, Fangyu, Baker, R. M L, Jr., and Woods, R. C., "Piezoelectric-Crystal-Resonator High-Frequency Gravitational Wave Generation and Synchro-Resonance Detection", in the proceedings of Space Technology and Applications International Forum (STAIF-2006), edited by M.S. El-Genk, AIP Conference Proceedings, Melville NY 813: 2006.
I don't know that these are purporting to report anything achieved; they could just be proposed experiments.
he has the same glasses as me. what a nerd.
who else is high af XD
To hear the truth watch Thunderbolts project Thornhill explain
this is a theory
"Precisely the same distance". Seriously WTF? First, you can't build anything precisely the same. Second, any precision will fail to satisfy the wave length of a laser.
+Jeff Jones Welcome to reality! humans can actually do alot of cool stuff :)
wtf is up with his eye?
Are you here to be informed of gravitation waves or to make comments relating to someone's appearance?
Bruh a gravitational wave going through your face right now.
I wish i could beat the living heck outta u