What are gravitational waves? - Amber L. Stuver
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- Опубліковано 21 вер 2024
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In September 2015, scientists witnessed something never seen before: two black holes colliding. Both about 30 times as big as our Sun, they had been orbiting each other for millions of years. A fraction of a second before the crash, they sent a vibration across the universe at the speed of light that was picked up by the LIGO detector. So what are these ripples in space? Amber L. Stuver explains.
Lesson by Amber L. Stuver, directed by Eoin Duffy.
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That animation is the greatest on TED-Ed's history. It made me feel the waves and gravity, so sweet.
+
Isn't it beautiful?
It's really neat and helps to easily understand
+1 also the sound design is amazing
very kurzgesagt-esque
The bigger the mass the bigger the depression. I'm living proof of this.
Lemon 😂
;(
But mass and weight are not the same....say you weigh 100Kg(to be precise 100 Newton) your mass is aproximately 10 kg.... ; )
@@BumanHeing I thought this was a joke about depression.
@@esbastow yeah whooosh for me...
The background sounds and animations are simplistic and awesome
It's insane that Albert Einstein predicted these waves in 1916. Such a genius
He just followed the math and observation
@@naeemtull2026 what have YOU done with your life? It's honestly pathetic trying to undermine the achievements of someone like Einstein
@@besto5486who are you to undermine his life? This just seems like a psychological phenomenon of you projecting your uselessness on him. Learn to be respectful to others. Replying to fire with oil is not a good idea.
@@flamegamer3293 no. I am respectful of others but i don't give everyone the same level of respect. The guy above is an example. I undermine whomever i want as long as they did something worth me doing that.
And these ones we first detected were around 100 light years away from the earth at the moment he came up with the theory! 😄
Watch with headphones. What an experience........wow just wow
U were right bro
the sound design in this video gave me eargasms, I recommend wearing a good headset while watching this, such asmr
Q. What are gravitational waves?
A. "Fluctuations in the gravity coming from the universe are called gravitational waves." (1:33)
Full marks to you
Disturbances in the curvature of spacetime generated by accelerating masses, such as from pulsars. Even quantum fluctuations can affect the interferometer's detection of these gravitational waves. First discovered in Einstein's general relativity paper. Gravitational waves can be described as manifestly observable Riemann curvature tensors.
@@josephlau13d77 Damn, now I need to get a physics degree and come back to read your comment xD
Same: 2:10 - 2:19
“When the mass making the depression moves, this sends out ripples in space-time. These are gravitational waves”.
Mass
I gotta say, props to the scientists that came up with the gravitational wave detection method. It's not scientifically speaking foul-proof, as a number of less extraordinaire factors could still be a cause of it, but the method for measuring these waves did surprise me given it's precision compared to some other grandiose experiments conducted in the field of physics nowadays. Great job to the ted-ed animators and script-writers too, as this was a brilliantly informative video.
"foul-proof"
You mean I can send my mixtape out to the whole universe through gravitional waves?
Nope, this is not just like a radio waves, its just a ripple of space-time because something massive is causing this
sendo ben
his Mixtape is massive 💥💥💥
@@sendoben8517 till now l could not understand or imagine the space-time in three dimensions.Can anybody explain?
@@rajeshchandrasekharan3436 there's no way humans can imagine the true 4d spacetime though. Scientists can only make projection of it onto our world.
1 It'll be confused with noise coming from other objects
2 it gets exponentially smaller the farther it gets
Although, technically, its always there, so, yes
When tree falls in a forest and nobody there to hear it, does it make a sound?
LIGO: Yes
That riddle is very outdated with our current understanding of sounds. Of course it produces sound waves.
The question is whether it exists where there is nobody to observe it.
@@tuckertechnolord6126 In fact it has never been more up to date.. something that both hanned and did not, rings any bells?
Thanks for making the complex concepts very simple to understand . Simply phenomenal ted.
I'm fascinated...
- Albert Einstein 2019
O_O
Quantum entanglement exists 😂
I'm scared...
-Albert Einstein 2020
Hey albert. U watch sinchan too. Nice to meet yah
Spooky action by Einstein 😂
this video is both visually and audio balanced perfectly to explain the topic. It delivers knowledge with impact.
Extremely clear and concise explanation, thank you.
One of the best gravitational wave explanation videos. Thank you.
The visuals are really pleasing the eye!
This animation was.... Just....Amazing!
A great video on such a tricky topic. Easy and understandable.❤👌
Gravitational waves in linearized gravity can be described as manifestly observable Riemann curvature tensors from Einstein's field equations. The Ricci tensor will vanish while the Riemann tensor can be nonzero as well.
This is a Great Video. I love how all ted ed animations are so nicely done - they make sure the message goes across to whoever is watching, no matter the topic. Getting Inspired by Ted ed over the years we also make ANIMATED HEALTH VIDEOS on our channel. Do check it out if you get the time.
I love animated videos. Your channel is also decent. though not as cool as Ted ed. Try making the animations more colorful.
Cool Videos . i subscribed. this animation or that. i dont care as long as i get to learn. :D
Health Chronicle We really should become a Patreon when we are able to 😊😊🌌🌌💖💖
Thanks for the support. We will get this process started :D
The animation on this one is exceptional, even for Ted-Ed!
the animation are simple, but also marvellous
You could say they're....
Simply marvelous
The sound effect is so
PERFECT
this animation is incredible
to ce completely honest. this is literally one of the best channels on youtube. vox, physics girl, and veritasium being next
Tbh ted-ed is the only reason why im passing science.
You people are simply the best in helping humanity understand such.
the sound design in the video is astonishing, props to those who did it
Loved the question at 1:47 "but what are they ripples on?.."
derived from the quadrupole formula
On Space Time Fabric
The animation is so perfect it explained gravitational wave very clearly. And cleared a few things up on what I was unsure about. Thank you 😊😊🌌🌌💖💖
So you love physics jacinda
ua-cam.com/video/J3Hoax81rkI/v-deo.html
Thanks for explaining what Gravitational waves would feel/look like if we could feel/see them. You all were the only people that could explain that to me.
Gravitational waves in linearized gravity can be described as manifestly observable Riemann curvature tensors from Einstein's field equations. The Ricci tensor will vanish while the Riemann tensor can be nonzero as well. The components of the affine connection (Christoffel coefficients) can be given by partial differentiation where τ is a proper time as measured by an observer travelling along the geodesic.
I am a simple guy. I see a Ted-Ed video, I like it.
Stuff like this is why visual thinking in learning science is important though. Those who practice more visual activities, such as drawing or animating, and even just using a lot of visual words in their everyday language, often end up understanding these ideas more.
This video is very informative.Thanks for uploading it.☺☺☺☺
Best illustration yet.
this video is amazing and really hoping from you to make more videos
amazing design
Congratulations to these physicists on winning the Nobel Prize in physics
Thanks ted for one of the simple yet best video out there of gravitational waves.
Those sound effects were so effective, they even gave me chills
I started to get a basic understanding of G-waves. Thanks to Ted-Ed
Wow, incredible quality. Sound & animation are fantastic!
you people inspire me, TED-ED you're awesome
If gravitational waves are produced by the movement of planets and stars, then there must be a constant noise in space. How could you discern the specific sources?
Gravitational waves are super super weak. The movement of the sun or the moon does cause ripples but too low for our detection. Veritasium has a video explaining any speculation you have of LIGO and how it detects gravitational waves
Your question has already been answered, but I just wanted to say that it was a very good question; just the type of question that you should be asking :)
The way she narrated made the topic interesting
You guys are just amazing.
Ive never heard better sounds effects, this is immersive
The animation is so...... GREAT
Thanks Kip Thorne for his contribution in creating LIGO.
LIGO actually just rumoured to have detected a collision of neutron stars! It's so exciting and brings tears to my eyes... Space and technologies really fascinate me 😊😊😍😍🌌🌌💖💖
they discussed it on pbs spacetime in the latest video
Gravitational waves in linearized gravity can be described as manifestly observable Riemann curvature tensors from Einstein's field equations. The Ricci tensor will vanish while the Riemann tensor can be nonzero as well. The components of the affine connection (Christoffel coefficients) can be given by partial differentiation.
That animation is super awesome
Q: Why was the fabric of space-time sad?
A: Because it had a gravitational *depression* !
Nice graphics. Minimal but elegant.
Iam in awe with this beautiful description if G-waves. Oh my.. I really love it. 😍😍
The animation is really satisfying .
Video started with a very DEEP quote. Damn!
The narrator has a really nice and soothing voice.
Amazing animation. Really brought out the principles.
The one channel on youtube that has a purpose
Keep Learning and you will never fall down.
By simple logic - if these waves distort "spacetime", it should not be possible to detect them with a detector that itself is in the said spacetime. As the detector would be distorted along with it. Tell me if I'm wrong and why. Also, I've always been bugged by how they depict gravity wells with a 2D mesh plane with 3D celestial bodies on it. Shouldn't the spacetime be, like, in 3D? Also, shouldn't there be a medium for the wave to propagate through? So what is that, that waves?
Very nice animation this time around.
It' s easy to understand with animations and it was worth watching
I love ❤️ these animations that TED Ed makes, they’re so good and educational. 👍🏻👍🏻👍🏻👍🏻👍🏻
LASER = Light Amplification by Stimulated Emission of Radiation
LIGO = LASER Interferometer Gravitational wave Observatory
So LIGO = Light Amplification by Stimulated Emission of Radiation Interferometer Gravitational wave Observatory?
Excellent video
I learn more from 10 minutes of ted ed then 6 hpurs of school, and ted ed is more fun.. :/
Nice information with great animation
1:07 when people see you with an iPhone X
"What a minimalistic animation. I loved it"
3:55 I just decided to put that as my notification sound
Genius I'll use it too...
The chirp may e the most awe-inspiring I've known
I love the animation so much
Beautiful animation!
But 1 if spacetime fabric is frictionless why would gravitational wave eventually collapse..?
2 what this waves are made up of.
3 are they electromagnetic if not how come they travel at the speed of light?
Great vid, great animation, but the framerate of it really snapped me out of it several times. Very shaky.
1:36 Double Triple Tap
Brilliant video about gravitational waves and beautifully explained
Please make a video on electromagnetic waves.
Brilliant animation!!!
animation's great! love the style!
Great video! I really recommend that book you mentioned at the end. It's a really great book.
What a delightful lesson; and non-profit.
I'm 16 years old, I'm just an average student. But I am so fascinated 'bout this lesson and everything that Einstein did discover though sometimes there are things that It is hard for me to comprehend
No way,I have Astrophysics for people in a hurry and was about to read it when you recommended it
crazy flat simple story and animation!! Very enjoy and love it!!
I wish TED-Ed does a video on Michelson Morley experiment . I had the book but I lost it so i wish ted ed does the video as it's easier to learn when ted ed does .
This is a really new concept for me
the animations were so good! hats off
Excellent video. Very well narrated and educational.
cool graphics
Animation was dope.
geez that animation was pretty awesome, keep up the good work!!
Is it weird that I learn more from these videos than my actual school?
outstanding animation and sounds effects
Amazing, I used to play with Ligo when I was a kid.
So if Einstein is right about space time dimensions, every single one of us in the earth has traveled back and forth in time in one fifth of a second on that particular moment !
AMAZING !!
Not really so amazing if you think of time as what it is (according to Einstein) - just another dimension. So it's like you jumped or leaned forward for 1/5 of a second.
Not back and forth, just forward at a slightly different rate.
thedeemon it's a wave... meaning it has crust and trough ! There is a possibility where it went below its initial time dimension.... i.e., past ! (I believe) !!!
Sandeep, it's a wave relative to usual metric value, not relative to zero. So the total value changes just a little bit around 1, never going to negative values.
Sandeep Balaji cite your sources. I'm curious.
exceptional tool
Eoin Duffy! You're back!!
(Thanks for the educational video too!)
Nice info. Thanks.
Are these connected somehow?
Time is fascinating. I worked the subway stations for nearly 10 years. From one end of the city to the other. Every so often I would notice the city would be saying that, "Today just flew by" or "The day was just dragging along." How can an entire city, with no interaction with each other until they used the subway, complain about the same time paradox unless it was effected by it? Maybe a time distorted bubble the earth passes through in its revolution around the sun. Maybe random waves of time distortion hitting the earth? Maybe they're given off by the sun. Maybe they're from outside our Terran system and reach us in intervals. ???? Ti-i-i-ime, is on my side. Yes, it is!
Am I right? I read (actually watched in video) that a LIGO detector had 4 legs (like a 'plus') (one - light source, the light wave diverged/divided (!dont know if I am correct) into 2 and go to the other 2 arms, are reflected, return back and then collectively pass through 3rd arm and are detected by interfrometer).