The Absurdity of Detecting Gravitational Waves

  • Опубликовано: 5 янв 2017
  • A head-vaporizing laser with a perfect wavelength detecting sub-proton space-time ripples.
    Huge thanks to Prof Rana Adhikari and LIGO:
    Here's how he felt when he learned about the first ever detection:видео.html
    Thanks to Patreon supporters:
    Nathan Hansen, Donal Botkin, Tony Fadell, Saeed Alghamdi, Zach Mueller, Ron Neal
    Support Veritasium on Patreon:
    A lot of videos have covered the general overview of the discovery of gravitational waves, what they are, the history of the search, when they were found but I wanted to delve into the absurd science that made the detection possible.
    When scientists want one megawatt of laser power, it's not just for fun (though I'm sure it's that too), it's because the fluctuations in the number of photons is proportional to their square root, making more powerful beams less noisy (as a fraction of their total). The smoothest mirrors were created not for aesthetic joy but because when you're trying to measure wiggles that are a fraction the width of a proton, a rough mirror surface simply won't do.
    Filmed by Daniel Joseph Files
    Music by Kevin MacLeod, "Black Vortex" (appropriately named)
    Music licensed from Epidemic Sound "Observations 2" (also appropriately named)

Комментарии • 6 121

  • Kevin Lu l Storm Chasing
    Kevin Lu l Storm Chasing 19 часов назад

    Meanwhile we have dumb fucks on earth who still believe that the earth is flat or climate change is fake.

  • Michael Pelz
    Michael Pelz 23 часа назад

    This explains why people say Jack Nicklaus is better than Tiger Woods.....

  • Cj Jr
    Cj Jr 2 дня назад

    Is there a diffrerence of you're not looking at the photons?

  • Lambda
    Lambda 2 дня назад

    No doubt really smart people working on this, but no way are they able to measure the equivalent of a hair’s width over 4.5 light years.

  • Chad Blakney
    Chad Blakney 2 дня назад

    They need to test thin space it will help detect asteroids if u find a gap in the wave then u will detect an object with in the wave pretty sure

  • Derek White
    Derek White 3 дня назад

    I've been in that facility at Cal Tech. Pretty fascinating walkthrough.

  • steve Campbell
    steve Campbell 3 дня назад

    So in the case of one of these recent detections, other instruments were able to observe the event (binary neutron stars I think) in the electromagnetic spectrum as soon as it could be located.
    Since the light/EM was redshifted due to the expansion of space increasing its wavelength, does this mean the same thing is happening to the gravitational waves?
    If so, could that be related to dark energy, one of the proposed solutions to which is that gravity decreases at faster than inverse sq over large distances........wouldn't "redshifting" cause exactly that by stretching the wavelength, reducing the energy of the wave per unit time?
    And, just a thought........gravity can be redhifted and cause redshifting ....I need a lie down.

  • EveryThing At Once
    EveryThing At Once 4 дня назад

    Proud to be an Indian!!
    That guy is from my country

  • NewHampshireBoy
    NewHampshireBoy 6 дней назад +1

    Well done but I am having trouble wrapping my head around this. Gravitational lense telescopes are coming to a planet near you!

  • orchid
    orchid 6 дней назад

    To everyone who thinks we are wasting tax dollars, I totally agree. Yes, stop spending that tiny fraction (~1%) of the government's funding on science/mathematics research. Why should we be spending money on fueling and promoting scientific pursuit of knowledge, paying some of the brightest people alive to uncover the mysteries of nature? Why the hell would we want to do that? I mean, what has SCIENCE ever done for us, am I right???

  • CAfakmykak
    CAfakmykak 6 дней назад

    the 1k dislikes are flat earth believers

  • Nani Hobo
    Nani Hobo 8 дней назад

    I don't know why but I like watching this man more than a Hollywood movie.
    You the best.

  • Astromyxin
    Astromyxin 10 дней назад

    Nah, don't believe it.

  • Ben Lloyd
    Ben Lloyd 11 дней назад

    I thought the hyper-loop test track in Vegas was the second largest vacuum after the large hadron collider?

  • Julian Lak
    Julian Lak 11 дней назад

    Now just imagine the universe is not infinite.

  • SquareRootOf2
    SquareRootOf2 12 дней назад

    But that doesn't tell you where the black holes are, does it? So what's exactly the point of detecting gravitational waves?

  • Peter Arnold
    Peter Arnold 12 дней назад

    I learnt more about LIGO in this 9 minutes, than I have in any other video. Thanks for making it so simple to grasp.

  • Immortal Wolf
    Immortal Wolf 12 дней назад

    seems simple, they are just measuring the distance that one photon or set of photons travels compared to the sets before and after.

  • Commandelicious
    Commandelicious 12 дней назад

    I love professor Adhikari.
    I wished every teacher I had were like him :D

  • Supreme Arbiter
    Supreme Arbiter 12 дней назад

    The heat these two participants' bodies emit would be enough to throw the system off. The view that a "hot" gas of one molecule per cubic meter after homogeneous dispersal from a point or not a point in an extremely short period of time, contradicting terminal velocity at the "conception" of the universe, then condensing into solar systems, contradicts Boyle's law and if these hot gases did coalesce and created nuclear fusion to keep a star from collapsing, this contradicts the idea of compression into a black hole.

  • nightmisterio
    nightmisterio 12 дней назад

    Absurd is the so many scientific lies on this video...

  • Arachnoscribe
    Arachnoscribe 13 дней назад


  • Paul Freeman
    Paul Freeman 13 дней назад

    " once upon a time, 1.3 billion years ago, in a galaxy far far away 2 black assholes merged etc." sounds like fairy tales, can anyone prove this crap? cuz you said it like it's a fact.
    the word "detect" in the title is very misleading. Why do you assume it's gravity that's responsible? This experiment is no different than observing an apple fall and assume it must be a force and call it gravity without directly observing it.

  • Robert Devino
    Robert Devino 14 дней назад

    This is possible because gravitational cosmology is completely made up! They need funding so they have to show results! so they lye collectively in order to secure money!

  • Diary 333
    Diary 333 14 дней назад

    those last few second tho

  • Kreeper Gamer
    Kreeper Gamer 16 дней назад

    If waves are made of particles
    And we can manipulate particles
    And gravity is a wave
    Made of particles
    Flying car when?

  • kashgarinn
    kashgarinn 18 дней назад

    Has anything changed since this came out?

  • Derick Chafton
    Derick Chafton 19 дней назад

    Disgusting waste of time.

  • Res Art
    Res Art 19 дней назад

    Guide of how to make something interesting sound borring

  • theshuman100
    theshuman100 19 дней назад

    When the experiment is done can they just zap a couple things on camera for the heck of it. Like you got this far to basically measure a single event and now that thats over might as well put it to good use

  • Mike Knox
    Mike Knox 20 дней назад

    Measuring the variance of 80um (human hair) over a distance of 26 trillion miles (distance to Alpha Centauri). Sounds like BS.

  • StanJan1958
    StanJan1958 20 дней назад

    What a waste of time and money. Words Money and influence. Tell a story long enough and people start believing it.... Easter bunny anyone ?

  • Ess and Em
    Ess and Em 21 день назад


  • Sky Man
    Sky Man 23 дня назад

    The more Absurdity you goes and the more funding you get dude. Look at how big the lab itself

    • orchid
      orchid 6 дней назад

      Yes. MIT and Caltech have led an international conspiracy involving scientists, professors, politicians, engineers, and administrators alike to get their hands on that sweet

  • GameGuru
    GameGuru 23 дня назад

    You know what's even cooler? Knowing that a black hole that far away managed to collide, and that the residual force from that collision managed to pass through each and every one of us. And none of us felt it at all.
    Pretty freakin neato.

  • Danny Siddall
    Danny Siddall 24 дня назад +1

    7:20. How many people can be housed, fed and educated for the cost of trying to detect a gravitational wave?

  • jmm1233
    jmm1233 25 дней назад

    The sound of it tho , it like listening to a wave in the ocean underwater , that bloop sound you get also when have fluid in your ears

  • Guitar-droning
    Guitar-droning 26 дней назад

    This is an expensive future on the wrong path. How can you measure gravity waves from black holes that does not exist?
    I'm not excited. Thomas Kuhn was wright. A theory that is so wrong, will die befor the old men with all there math and mystic, religious explanations dies. 11 dimensions, black holes oh no there must also be black energy ... what is the next mysterious things from a fairy tale, that they will put into the world, that only exists in their fantasy and their math.? The king has no clothes.

  • accovaBrain Scientist
    accovaBrain Scientist 26 дней назад

    Why people are becoming over weight?
    Date 25-1-2018
    Nalin Ranjan, Scientist
    BBC News
    The secret to weight loss is relatively
    connected to muscles and bones
    I am surprise to see an article titled as “The secret to weight loss may lie in our bones” appeared in ‘The Times of India dated 19-1-2018 stating Our skeletons may help keep our weight under control, according to fascinating new study with animals. The study suggests bone could be much intimately involved in tracking weight and controlling appetite than scientists realized.
    There is no question that our bodies like to maintain whatever weight they have sustained for any period of time. This is in large part because of our biological predilection for homeostasis, or physiological stability, which prompts our bodies to regain any weight that we lose and, in theory, lose any weight that we gain. To achieve this stability, our bodies have to be able to sense how much we weigh and note when that weight changes. It has not been clear how our bodies manage this trick.
    My dreams are coming true again as per the article
    I would like to put it in a more perspective way how bones and the muscles have the sense of controlling the body weight when they indulge in external force enhances this dipole dipole force that stimulates all the organs in the body to become active. Further by this activity it automatically lowers the appetite and reduces the body weight. My invented Medical Instrument also plays in the same way but it has more leverage in controlling the body weight. Even if I eat more of carbohydrates or any sweet or fruit too light help to control them by stimulating the internal organs. This way it doesn’t have the craving to absorb the food into the body leaves out as feces. This is mainly caused by the freshness of the body through the medium of light enhances the dipole dipole force which is nothing but Higgs Boson particle strengthening all the metabolisms in the body enhances the voltage in the brain. By enhancing the voltage it controls the food intake that keeps the body and the brain as fresh as ever.
    Let this beauty speaks itself in life.
    Nalin Ranjan
    Brain Research Work
    Copy of this report posted to “Dr Michio Kaku, Scientist from United States -Californavia You Tube on 25-1-2018
    Copy of this report posted to Kings College London Neuroscience” on 25-1-2018
    Copy of this report posted to Dr. Neil Degrasse Tyson, Scientist from United States -New York” via You Tube on 25-1-2018
    Copy of this report posted to Dr Jennifer Klay, Asst Professor of Physics at California Polytechnic State University, San Luis Obispo” on 25-1-2018

  • Raymon Crane
    Raymon Crane 27 дней назад

    How do they dissipate 1MW of power when the beam comes back?

  • Dedskin Prodcer/DJ
    Dedskin Prodcer/DJ 27 дней назад

    If you ask yourselves why scientists didnt tell us this when they announced that they've found G waves and proved them , you are on the right path .They are beyond smart , entering Realm of " if you think you understand it then you don't understand it " , so strap in for more absurde claims .

  • Buck Fisher
    Buck Fisher 28 дней назад +1

    Who told these losers that gravity travels, or has waves? What a pile! As far as we can tell, gravity doesn't have a delay. If you turn over a rock, on planet Earth, you instantly affect the entire Universe, a little. Or did someone somehow confirm the speed of gravity? How did they do that?

  • Aslam Khan
    Aslam Khan 28 дней назад +1

    Bob vegana man 2:59
    Kidding I'm Also an indian.

  • Lin Yen Chin
    Lin Yen Chin 28 дней назад

    Sounds like Kaioken, that surge of power within 1/10th of a second that exceeds the power of all else. It was Goku!!

  • Bipolar Transition
    Bipolar Transition 29 дней назад

    Impossible. Any movement in the apparatus even heat expansion will change the length of the arms. Amplify the signal so it is much easier to believe. We can amplify light, sound and electricity so why not amplify gravity? .

  • Wayne Palmar
    Wayne Palmar 29 дней назад

    thanks for the video :)

  • CJ Goth
    CJ Goth 29 дней назад

    40 days to get to 10e-12? I used to get to that in the 3m vac chamber where we tested ion drives in around 3-4 days. OK, this was 10m long, not 4km, and we had a huge cryo-pump, but still ... that is a long pump down. For those interested - I worked on the T5/UK10 and UK25 ion drive programmes in the 90s.

  • BudhaXIII
    BudhaXIII Месяц назад


  • Peter Germanese
    Peter Germanese Месяц назад

    They dont wear those glasses for protection, their just cool af

  • Generation Noise
    Generation Noise Месяц назад

    crap and lies !

  • Joel Harris
    Joel Harris Месяц назад

    When we get a lot of these all around the planet, we can more accuracy know where they are coming from, A LIGO interferometer telescope.

  • LordMardur
    LordMardur Месяц назад

    A laser that can instantly vaporize your head. And you are wearing green glasses as protection? Seems legit.

  • Adaept Zulander
    Adaept Zulander Месяц назад

    Show us a second detection.

  • Dejay Rezme
    Dejay Rezme Месяц назад

    Rofl "just a smoking stump" haha. Then why are we wearing these goggles? Are these placebo goggles? :D

  • low owl
    low owl Месяц назад

    Looks like the Big Bang is a subhuman savage primate beasts' name to describe the theory of his violent flatulence . The Big Bang never happened because if all matter was . I am going to look down on all millenials with a disgusted fury and you must all likewise divert your glances and look downward in shame until I am done. If one of you foul savages so much as glances at the brightness of my glorious shadow I will systematically exterminate your entire bloodline in a series of violent strafes in the night sky. I am a barn owl, I am better than you. Do not look at me, I am too wonderful for you and I am flawless.

  • saigo87
    saigo87 Месяц назад

    Maby Aliens comunicate with gravitational waves.

  • Madhusudhan S
    Madhusudhan S Месяц назад

    If we were to be sufficiently close to an event that causes gravitational waves at an amplitude of say 1 cm, would it destroy us? I visualize these waves travelling through space, as gravitation interacts with matter weakly, would the strain on matter for such a wave be high?

  • Project Start
    Project Start Месяц назад

    No absurdity whatsoever.

  • RESEARCH Flat Earth!!! Wake up
    RESEARCH Flat Earth!!! Wake up Месяц назад +5

    There's no gravity it's a freaking Theory and we don't live on a damn ball flying through space.

    • Mike Knox
      Mike Knox 20 дней назад

      Gravity is a constant (9.8 m/s^2). The only variables in the formula to determine if you will fall after you jump out of a window are 'fluid density' aka the atmosphere and 'volume' i.e. the jumper, which means you don't need the 'g' value to accurately calculate it. The word gravity comes form the Latin word 'Gravis', which means weight or at least it used to. Now it means something else. It's called magic.

    • Ess and Em
      Ess and Em 21 день назад +1

      Stop drinking Mercury. It doesn't actually make you immortal.

    • TheWarBabe27
      TheWarBabe27 25 дней назад

      Howlie kins exactly

    • Howlie kins
      Howlie kins 26 дней назад

      everybody knows that god always bets on black

    • Lars Truee
      Lars Truee 26 дней назад +1

      Howlie kins but wasnt Einstein religious too? "God doesnt gamble with the universe"?

  • Young Tang
    Young Tang Месяц назад

    How about free Internet for the world without the government intervention? Imagine that!

  • Artemis Logic
    Artemis Logic Месяц назад

    the earth is flat, ligo was a fraud for funding

  • Oguz ilius
    Oguz ilius Месяц назад

    scientist measuring in inches very noice

  • Silica
    Silica Месяц назад

    Security vulnerability in the universe, god patch plz

  • bitch ass
    bitch ass Месяц назад

    6:46 "Flesh light", lmao

  • bitch ass
    bitch ass Месяц назад

    But, Why?

  • bitch ass
    bitch ass Месяц назад

    Why didn't we just build it in space?

  • bitch ass
    bitch ass Месяц назад

    why would we create something to detect something we did not know already existed? That's like creating a dictionary without knowing that words exist?

  • Jack Hanson
    Jack Hanson Месяц назад

    We were just in time to hear our universes heartbeat, what a time to be alive!

  • Samrat Dutta
    Samrat Dutta Месяц назад

    Rana Adhikari!!! yepeee he is in this video

  • Eben Visher
    Eben Visher Месяц назад

    I wish I could vote "Thumbs Up" over and over and over! You are so unbelievably good at presenting powerful concepts succinctly. Thanks *so* much for all the time you spend. And we get to benefit for *free*!! (Well, not counting our Patreon pledges. :-))

  • Jaqen H'ghar
    Jaqen H'ghar Месяц назад

    This guy seems bored by the ignorance of all other human beings. I bet if you met him you would never know how smart he is because he wouldn't bother to say things he knew you wouldn't understand

  • outerrealm
    outerrealm Месяц назад

    Does physics explain your hair? Is it the physics of that's the way it looks when you get up and so what?

  • John Lewis
    John Lewis Месяц назад

    Awesome presentation!

  • JR S.
    JR S. Месяц назад +1

    I think his explanation missed the point of the 2 perpendicular arms. It seems gravitational waves don't stretch both arms in the same way, causing the arms to differ at length during the passage of the gravitational waves. After all, if it weren't so, the arms would have the exactly same lengths and regardless of how many new laser beams you shot into both arms at the same time, they wouldn't go out of phase and interfere, right? Can anybody correct me if I'm wrong?

  • Yaboylemon
    Yaboylemon Месяц назад

    *is lecturing me on gravitational waves* * claims that something WEIGHS in KILOGRAMS*

  • Kae Pugna
    Kae Pugna Месяц назад

    Black holes don't exist..simple answer. It's all a lie

  • Damian Mandic
    Damian Mandic Месяц назад

    I don't think this facility is for measuring gravitational waves. But hey, that's just me.

  • kirdiekirdie
    kirdiekirdie Месяц назад

    Prof Rana Adhikari is so funny, his lectures must be awesome.

  • bloodspilla55
    bloodspilla55 Месяц назад

    Why do we need two arms? Why must they be perpendicular?

  • Rajwardhan Sagare
    Rajwardhan Sagare Месяц назад

    doesn't earths curvature add an error in measurement
    how can it be eliminated

  • Richards Graham
    Richards Graham Месяц назад

    total dis information

  • WinningCrys
    WinningCrys Месяц назад

    At 7:23 , look in the mans sunglasses.

  • trabur metaheap
    trabur metaheap Месяц назад

    as if making a tool like that wouldn't send ripples past the observable universe; now run and detect that.

  • Don Jobin
    Don Jobin Месяц назад

    If time & space actually warped the photons in LIGO would stay in sink, not be detectable. But as a proper force with a carrier particle (graviton) it would move objects in space (Newtonian force) but not the space itself.

  • Avinash Tiwari
    Avinash Tiwari Месяц назад

    When ever I Hear Quatam Mechanics , It Always Bring me near concept of MAYA in Hindu Philosophy.
    and It always Give answer HUMAN Imgiation is Fastr then Light.

  • funkyplasmaman
    funkyplasmaman Месяц назад

    the signal is an anomaly and gravitational waves have not been detected. for arguments sake and ease of explanation lets say the laser takes 1 second to travel the detector and they measure 1.1 sec this would be an alleged gravitational wave, but if the wave bends space it also bends time if space time exists, this slowing down of time would cancel out the increase and the observer would not measure any change.

  • Abott
    Abott Месяц назад

    What a perfect way of describing that moment when physics hit the quantum level and everything became exponentially harder to explain: Hmm… nature must be trying to hide something here…

  • Rolotomasi Hunter
    Rolotomasi Hunter Месяц назад

    😏 🤖💩😆

  • animashock wave アニマチョーク

    A legenda em portugues precisa ser completada.

  • Luke Day Music
    Luke Day Music Месяц назад

    Great video. Really enjoyed it, especially the general sense that things that are definitely possible.

  • Julius Bernotas
    Julius Bernotas Месяц назад

    They are wearing those glasses to protect their eyes from 1 MW laser

  • The Questioner
    The Questioner Месяц назад

    That's gotta be the chillest physics professor in as large a distance as possible.

  • hottrendz
    hottrendz Месяц назад

    Why is it so important to find this out? How will this be beneficial to us?

  • A. N.
    A. N. Месяц назад



  • Bel-Shamharoth
    Bel-Shamharoth Месяц назад

    What if we used 1.21 Gigawatts for the laser?

  • ThrowingItAway
    ThrowingItAway Месяц назад

    Why doesn't the detector have three arms?

  • Jeremiah Mullikin
    Jeremiah Mullikin Месяц назад

    Now that we know gravitational waves exist, what kind of technology can we come up with using them?

  • Steven Mcelwee
    Steven Mcelwee Месяц назад +1

    Space is not real. Gravity isn't real

    • ultratronger
      ultratronger 13 часов назад

      They do what? I never said anyone did anything.

      After thousands of years of scientists trying to figure out the world, you come here and try to prove they're wrong without facts, just a belief.
      If you don't wanna believe the pictures of the earth go ahead, just don't annoy other people.

    • Steven Mcelwee
      Steven Mcelwee День назад

      ultratronger oh but they do, young sheep.

    • ultratronger
      ultratronger День назад +1

      You're doing the same, but with pseudo science.

      Their theories work, yours don't.

    • ocirtceleojepse
      ocirtceleojepse День назад +1

      That's the point; they're just talkin bull$hit and washing blood money. The earth doesn't move. We live in a dimentional plane (flat stationary plane). No space, no black holes, no gravity, just some guys talking as if they know something.

    • ultratronger
      ultratronger 14 дней назад +1

      I wish you weren't real either

  • Sjoer van der Ploeg
    Sjoer van der Ploeg Месяц назад

    Please stop mixing up constantly with repeatedly or continuously!
    You can shoot something repeatedly or continuously, not constantly!

  • Jeremy J
    Jeremy J Месяц назад

    I hope my tax dollars aren't being spent on this.