What Are Gravitational Waves?

A few months ago there was all this hype about the discovery of gravitational waves. Why was it such a big deal? What are they? How are they made? Where did these waves come from? These are all question we try to answer in this video.
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What the HECK is Light?!
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[@ScienceAsylum]

Correction at 4:48 : The 600 square degrees is correct and that is roughly 1% of the sky. However, that isn't 5 full moons of area. It's *_3000_* full moons area. I don't even understand how this happened. 😔

[@pedrowirti2031]

You're Crazy, that's enough explanation for it

[@mraju94]

You did some unnecessary math (3000/600 = 5 moon per square degrees) subconsciously and then you just made it 5 moons.

[@common_c3nts]

shit is always happening and shit is never happening

[@arckocsog253]

Dont beat yourself, we like you!

[@gumunduringigumundsson9344]

5 moons can essily be 3000... whhat the f is a square degree snd why is it not paying taxes? I knew a degree that was square and a half... it payed its taxes... why is not a taxcode for these things... they are taxing our cerebrums.. they should.. wait.. can they use us or are we just benefitting from them? Joking is fun. Science dude.. you rock! Thanks.

[@codedragon6237]

This channel is way underrated.

[@aleksitjvladica.]

Your mother is very underrated.

[@_charliezard_7218]

Владица Алексић very funny

[@arya1275]

@@aleksitjvladica. bruh

[@skmaurya19]

Indeed

[@krupt5995]

@@aleksitjvladica. Do people like you?

[@Mortone71]

I used to think spacetime was the best science channel. But I was wrong. This is the best science channel.

[@ScienceAsylum]

Thanks! That's a huge compliment!

[@musashi939]

I wouldn't say better. Both channels address a different audience. Usually, the stuff of space time is way too advanced for me to grasp. They go too detailed for a general science interested audience. On the other hand my critique with this channel that many videos end at the point where I think ok and now some more dirty details to wrap it up, but then he ends apruptly. So neither is perfect

[@ManyHeavens42]

This channel and time or linear hahaha

[@bitterlemonboy]

PBS Spacetime disliked this comment

[@vohamedia5434]

This channel deserves way more subscribers

[@DANversusWTP]

I know right, guess it's up to us to like and share the shit out of his videos.

[@fusiontricycle6605]

VOHA Media yes it does

[@DheerajBhaskar]

That's what I was also thinking!

[@eluhdiehl2352]

VOHA Media he will eventually get it a lot of subscribers

[@KevinLearns2Rock]

The fact that LIGO was even operational during the detection of the gravitational wave is astounding.. It makes me wonder if there are even more massive black holes merging/have merged that we will be able to detect with more precision in the coming future and what type of discoveries will be made with said data.

[@ScienceAsylum]

LIGO turned on its upgrades and almost immediately detected the gravitational waves. It happened *days* before the official announcement that they had finished the upgrades. Even though is sounds like a really amazing coincidence, it isn't. There have actually been other (possible) detections since September 2015. Now that we're monitoring that much of the universe, they're going to be detected very regularly.

[@KhevinMituti]

I JUST FOUND OUT ABOUT YOU MODERN DAY BEAKMAN CLONE. Dude get some of your videos as ads in some larger science channels. You have so much potential with the channel and your videos are amazing. Cheers!

[@ScienceAsylum]

Thanks!

[@GREGGRCO]

Oh ! I miss Beakman, the Rat, and Eliza !! Great show !

[@NG-VQ37VHR]

LIGO is great. I went to high school in Livingston while it was being built. I’ve now taken my children out there several times to tour the facility.

[@Fkashmhd]

Man, you are really good.. This channel is seriously underrated... Keep going man.. It only needs one good viral video to give the necessary boost to the channel... I have almost watched all videos in last one week's time... Thanks for all the research and the explanation...

[@gilgamesh.....]

Just discovered your channel. Love your videos! You've got a great way of explaining things that makes the complicated make sense. Just to let you know, there's a new Voltron series on Netflix. It's actually pretty good.

[@ScienceAsylum]

Thanks! The new Voltron is good? I was nervous about it.

[@mustangmanx]

Finally! Someone else who knows about Voltron! My life is complete!

[@zeinkassim2785]

I grew up watching it too. Amazing cartoon

[@KnowBuddiesLP]

I don't think you are representing the full scope of this properly. You only showed the lion version of Voltron and not the vehicle one, I expected more from you Mr. Lucid! :P

[@ScienceAsylum]

You're right. I've failed Voltron fans everywhere. ::hangs head in shame:: ;-)

[@nishantdengi7739]

thx for telling me what gravitational waves are, it was driving me crazy. Anyway, your videos are AMAZING! Thanks again for making them

[@ScienceAsylum]

Glad it was able to help :-)

[@filipebcs8]

Man... You blow my mind every time! Your explanations are so straightfofrward and precise! I learn a lot from your videos every time! Thanks for the great content!

[@kylorenkardashian5518]

I lovecoming across your old content that I havnt seen yet. thanks fam

[@SSMLivingPictures]

It doesn't matter how many other vids are out there talking about a subject - Asylum is always superior

[@ScienceAsylum]

I hope to revisit gravitational waves one of these days so I can give more details.

[@sadashivnande5800]

Heres a non-physics fan frm india... ur vdos got me interested in physics man... u r doin good work

[@baikoki]

Don't worry, man. I know Voltron.

[@TheFanciestCipher]

Same

[@SevenPr1me]

The netflix show was lit fam

[@zeinkassim2785]

So do I. Love the cartoons when growing up.

[@michaelfrankel8082]

That’s Dr. Lucid!

[@ibraheempasha4207]

you explained it very well, also you explain how can we measure them which most of the other you tubers missed. keep up the good work.

[@joerosati5017]

Love your work man, hope you stick with it! Stay crazy

[@nvdss4454]

Here's a like for this kicking intro - brilliant work.

[@dwsmarter]

The only video I've seen to actually come close to explaining the many concepts involved mathematically and step-wise. Except for the hand-wavey "using general relativity..." Let me qualify that by saying I've seen like 2 other videos on this topic. But thank you!

[@piyushpatil4679]

Your channel needs more praise, very engaging host and nice explanation.

[@sketybel1]

The more I think about it, the more I am convinced that gravitational waves reject the null hypothesis of the singularity. If time stops near a black hole then we would never observe a blackhole collision..... Your videos just came up in my feed, and I just binged at least 20 videos. I love the left field analysis!!! You truly shifted my thinking!!! ∞=E+≠

[@sketybel1]

Side note... I have never seen that formula before, but it makes sense to me. Equal gets canceled out and so does infinity, so we are only left with measurable energy. Infinity in the physical is just a clue the we missed a glitch in the matrix and need to recalculate.

[@brucewayne5488]

Your videos are amazing

[@ScienceAsylum]

Thanks!

[@brianhaws2483]

Voltron rules, lol. Love your videos and the humor that's keeps it fun.

[@otakuribo]

"Form feet and legs; form arms and body; and I'll form the head!" It's okay to be a little crazy; and it's okay to be a little classic. 🤘😀 Also thanks for demonstrating that LIGO actually WAS able to get some vague (but still useful) sense of direction; that's something I'd missed!

[@ScienceAsylum]

When those other countries finish their observatories, direction will become a lot less vague.

[@hershalllouw9446]

your def only scientist that be able to explaining this thnk! Thnx U!

[@JasmineJu]

I just became a Patron, your video's are hands down the best educational video's on youtube.

[@ScienceAsylum]

Thanks! and thank you for the support :-)

[@sergiosanchezpadilla1418]

I grew up watching Voltron here in Mexico :D Great to know there are awesome people like yourself from my generation :D

[@ShadowZZZ]

ngl this is single handedly one of the coolest and most awesome discovery in physics within the last few years

[@philjamieson5572]

I think that was very clearly explained. Thanks for doing that.

[@theemissary1313]

I get the impression that this voltron reference might have been the reason for 2019/20 remake of voltron. If so, well done :)

[@genesanborn2367]

Excellent content. Liked the info about Einsteins equations and the 4d calculations needed.

[@pingpong607]

A 4D wave? I feel my brain melting from thinking how it would look like.

[@ScienceAsylum]

Here is NASA's best attempt: svs.gsfc.nasa.gov/vis/a010000/a011000/a011086/high-res.nostars.097280.jpg ...but it's definitely brain melting.

[@pingpong607]

Oh so gravitational waves=flowers. Makes much more sense. Thanks ;)

[@einsteinvondaniken]

That looks like a cosmic vagina

[@jonw8764]

This is my new desktop background, thanks

[@Digalog]

@@ScienceAsylum Thank you

[@jameelarosetafoya2058]

Awesome and yes I remember Voltron, Robotech, PowerRangers and Z-Force(my personal circle of friends creation) in 3rd grade lol. I'm grown now yet perfect humorous analogy. Love the "laser" reference as well. I feel I'm really enjoying these learnable concepts in an awesome NO, TOTALLY AWESOME way. TY👍🏽

[@bullpuppy7455]

Fascinating! So: - Light (EM) waves are communicated as energy ripples through space... - Sound Waves are communicated as energy ripples through space... - Gravitational waves are communicated as energy ripples through space... - Thought waves are communicated as energy ripples through space... - Space could easily be described as the universal infinite backdrop with the potential to contain stuff within it (such as bundles of light / energy that we call matter) - The human mind can be described as an internal, imaginary backdrop, with the potential to contain stuff within it (such as bundles of light / energy that we call thought) Sounds to me like a universal mind might just be flowing into each of our minds continuously, like a river. If that's the case, we might just BE the Universe, experiencing, sharing, and interacting with itself from a vast number of independent points of view. That would make each of us a 'Unique Thought' in the Universal Mind... If that's so: - The Universe is our True Self (take it away, and what's left that is you? Other than the blank slate that is...) - Attack any part of the Universe, and you attack yourself - Love any part of the Universe, and you Love yourself No wonder I feel so bad on the inside when I rage at people outwardly! Now I can't help but wonder how I might feel if I were to accept all people as they are, instead of how I think they should be... Wait a minute... How the heck did we go from Black Holes to Love? Am I living in some kind of Asylum? This is madness! But I kinda like how it feels... MmmmMmmmm

[@ScienceAsylum]

You're generalizing a bit too much. To be more specific: - Light (EM) waves are _a transfer of_ energy using ripples _in the EM field._ - Sound Waves are a transfer of energy using ripples in matter. - Gravitational waves are a transfer of energy using ripples in spacetime itself. - Thought waves... Do you mean brain waves? Like the ones on an EEG? I don't know much about those, so you might want to check out my friends' channel Neuro Transmissions: kzbin.info

[@FrancisZerbib]

Excellent presentation. Thank you

[@katherinecannon9264]

Francis Zerbib h

[@rebanelson607]

Thanks for the excellent explanations. The comments on this vid contain some rather good questions. Just what you'd expect from a bunch of crazies! :)

[@1223-e9q]

You should write a book named “quantum mechanics for visuals“.

[@protestant6258]

Can gravitational wave creates light? Here’s the train of thoughts: Becoz gravitational wave is the fabric of spacetime, and atoms is laying on spacetime or said to exist on the basement of spacetime, so gravitational wave could make atoms vibrating. And moving charge creates light, so could gravitational wave creates light?

[@katawaya8101]

1:36 Everything changed when the string nation attacked

[@nuralimedeu]

...but when the world needed him most, he vanished.

[@scotthansen1442]

When you mentioned that we have 2 senses that evolved to detect waves, it got me to thinking about the physics of the human body. I was wondering if you'd consider doing a video or a series of videos where you discuss the physics of what occurs with our bodies and how they work. I'm looking more like the chemical process of digestion, or the electrodynamics of nerve impulses. If this is outside your expertise, I would understand since you seem to be discussing/teaching a different scientific area.

[@ScienceAsylum]

It is outside my expertise, but my wife is a biologist, so I could consult her on it.

[@scotthansen1442]

@@ScienceAsylum that would be cool. It's also nice that you wouldn't do something outside your expertise. I've seen too many scientists take their respect in their given fields and use it to make claims in other fields as though they were experts. That annoys me to no end, especially when they are speaking in my field of expertise and I know they are definitely wrong in their statements. Thank you for knowing your limits and staying within them. It makes your lessons that much better.

[@crispypickles8466]

(Guy explains super complex ideas in a way that makes them more understandable to everyone) Me: "yeah, I guess that's pretty cool. This guy is alright." (Guy says VOLTRON)ME: "THIS MAN IS THE SMARTEST PHYSICIST TO EVER LIVE! EVERYTHING HE SAYS HAS TO BE TRUE! SUBSCRIBE! SUBSCRIBE! SUBSCRIBE!"

[@shpageltheduck6098]

How many years?! 1 billion?! That’s some old waves when u think about it those were made a billion years ago Space is so weird yet fascinating at the same time It’s the only thing that does that

[@ScienceAsylum]

Yeah, super old waves. It's wild!

[@ItsEverythingElse]

The instruments man is capable of building are truly astonishing.

[@zakirhussain-js9ku]

I think gravitational field around mass is made of submicroscopic quantum particles of mass. When mass moves these particles produce waves similar to EM waves produced by charge. These particles give gravitational wave a physical structural. Space acts as a medium for propagation of gravitational waves.

[@amitbahl5189]

Please make a video on gravity. What is gravitation why does it happen and is there a seperate space time fabric for every particle?

[@BidurTiwari]

Can you make a video on what is gravitational constant and things related to gravity please

[@madhusai220]

Subscribed

[@sarveshpadav2881]

In one of the wikipedia articles on gravitational waves(which i have read long time ago), it was mentioned that, earth while orbiting the sun, looses its energy in the form of gravitational waves resulting in the decrease of its orbital radius of earth by an amount equal to the diameter of a proton each day. Well if that's true then does it mean that all gravitationally interacting systems lose energy in the form of gravitational waves ?

[@ScienceAsylum]

Yes, the Earth is gradually losing energy to gravitational waves (though I'm not sure about that calculation you're referencing). The loss of energy for the Earth is just too small to make any noticeable impact on the Earth's orbit.

[@khushiram7205]

I watched many video on gravitation waves but none was so suucesful describing so clearly... luv this video..😋😋

[@ManyHeavens42]

I bet this show is a big Success in the Schools

[@inox1ck]

Great video. Just one thing that I don't think is quite ok. Massive particles travels as waves as well and we can call them matter waves. Waves "carry" or better said propagate energy, momentum, mass(which is a form of energy) and other properties, which are conserved (actually all properties of a particle in the sense of quantum object).

[@adityakashyapvelide]

Make a video on Tachyons.

[@MsUbersoldat]

"It's a great time to be a alive" :-D I concur

[@Lucky10279]

You sounded so excited when you mentioned lasers. I'm surprised you've never done a video on them (or have you and I'm forgetting?).

[@ScienceAsylum]

I have not. I probably should though. It could be a nice low-key video to mix in.

[@EthioJOB]

One day this channel is gonna send me over the cliff to loonyland. I want more!

[@Znyggisen]

The 3 solar masses of the original black holes that were released, was that the kinetic energy from two orbiting black holes turning into one that is not orbiting and having less (3 solar masses worth) of kinetic energy?

[@ScienceAsylum]

It difficult to say where that 3-solar-masses of energy _specifically_ came from. All we can really do is keep track of a total amount before and after.

[@user-uu7sk8bz5l]

You are the best Sir

[@zakirhussain-js9ku]

I think space is made of quantum mass particles. Therefore Space can curve, stretch and contract like gas. Gravitational waves are density waves of these particles which travel at light speed.

[@solapowsj25]

Spacetime is curved by gravity from mass 😊.

[@victora.delima415]

Best video so far! Amazing!

[@ScienceAsylum]

Thanks Victor!

[@javier9512]

¡Gracias!

[@aaronmicalowe]

And I think what you can do once you have an area of space you know the gravitational waves came from, then you can look for other signs like x-rays etc to pinpoint it even further. That's how they're able to narrow it down to a single object.

[@piotrjuszczyk1]

Yes, it's great time to be live :)

[@nabinnyc]

I suspect that I may not be grasping the concept of gravitational waves. What would a gravitational wave tsunami look/act like and what would it 'do' if anything IF it could occur at all? For example, what would it "feel" like to be 1.2 billion light years closer to the origin?

[@benalden2007]

I love this kind of stuff! Quick quetion though. How did they know that these black holes collided before they saw the gravitational waves? If you need two black holes to collide to detect the waves, how is this relevant to anything in physics? Also it's kind of convenient that in all of the universe, only two black holes collided at the point that we were observing. Given the vastness of space, shouldn't gravity be waving all over the place? Like an ocean.

[@ScienceAsylum]

That's the nice thing about gravitational wave detectors like LIGO: we don't have to be looking at any particular place. As long as they're running, they can detect g-waves from _all directions simultaneously._ If a g-wave passes through the detector from _anywhere,_ we'll get a signal. Having two LIGO detectors lets us narrow down where they came from (and even more detectors will give us even more precision for that). Also, the detection I mentioned in this video was only the first. There have been many more since then. Yes, it's like a big ocean, but some waves are far too weak for the detectors to see. We only pick up the strong ones.

[@benalden2007]

@@ScienceAsylum thanks for the reply. I'm just not sure how we know the waves are from two blackholes that collided and not something else. can we see the collision?

[@ScienceAsylum]

We can't see it, no. They happen _way_ too far away for that. It's based on the results we get. We can use the information in the wave to figure out what the original objects must have been. Different objects make different looking g-waves. We've detectors neutron star collisions too and we can tell the difference.

[@hnipen]

I want MORE, and MORE and MORE and MORE of this 🤣

[@Kevin36914]

There are some news or findings about gravitational waves? theorically could exist dopler effect like red/blueshifts? whats happens with time and space in distances very close to the collision? These waves posses a frequency/spectrum? lot of question haahah, best

[@andycopeland7051]

Great vid

[@billhopen]

dude, everyone knows gravity is a partical made of probability...maybe. lol absolutely love this channel

[@inox1ck]

Every single particle has an associated complex valued field that oscillates creating waves that travel. The total energy of such a field is quantized. What about the gravitational waves? Is the gravitational field a quantum field as well?

[@ScienceAsylum]

Every attempt to model the gravitational field as a quantum field has failed (or hasn't made any testable predictions).

[@khoanguyen5321]

Is gravitational wave is a flow of graviton? Like electromagnetic wave is a flow of photon?

[@juleskurianmathew1983]

Can you do a video on the difference between graviton & gravitational wave?

[@surabhk.t6174]

Can two waves with different frequencies interfere? If so do electromagnetic waves in outer space interfere ? Suppose the gravitational waves u mentioned undergo interference with some other EM wave. How was the wave independently​ detected by LIGO? By the way your videos are awesome😄

[@ScienceAsylum]

A gravitational wave could definitely interfere with another gravitational wave, but _not_ with an EM wave. Wave interference requires the waves to be the same type.

[@GREGGRCO]

Gravity wave(s) might change (interfere) the "direction" (or vector) of the E-Mwave: e.g. bending light as in gravitational lenzing. Maybe cause EM wave changes in phase, frequency (doppler), and/or amplitude (complements or destructions), only because the multiple gravity waves might change the shape of the space-time the EM wave is riding on from our perspective here; I'm really stretching it here.... But generally -- "What Nick said!"

[@sinebar]

I was thinking about how light is just vibrating electromagnetic fields and then the thought occurred to me: Could spacetime be vibrated to the point of producing photons or particles? Perhaps they could be called cosmotons. Or maybe even produce gravitons? Any thoughts? One other thought. What if a gravitational field could be varied at high frequency. Maybe produce gravitons? Or some other exotic particle like dark matter?

[@codydickinson]

Excellent

[@jonbold]

It seems to me that the teams at LIGO, brilliant as they are, do not understand how gravity works. Gravity is actually three things and at best, LIGO can detect one of them well. LIGO detects time dilation waves. It does so by detecting the difference between the deflection of two lasers. I think the experiment would be much more sensitive and have greater bandwidth if it detected the changes between the original propagation and late detection of a single beam because maximizing the time difference should maximize the physical difference. It still makes sense to run a plurality of these systems at different angles. A VLF detector should be able to hear all the tides and moon activities of our solar system along with all the galactic and extragalactic events..

[@puffpaff7821]

I did not believe you could look cool before I saw this intro

[@trevorrogers95]

I only know Voltron from that song off of the slim shady lp... something else about Folgers crystals and gentlemen holding their pistols. At least I think that’s the same song ;P

[@SUMANPOUDEL-BCE]

In one of videos u said that light travel through electronic and magnetic field. But what creates those fields?? And can they be called as medium for light travel?? Also u said the wavelength of light stretches due to expansion of spacetime..... So spacetime act as medium for light travel??

[@ScienceAsylum]

Charged particles make those electric and magnetic fields. The charged particles aren't the medium for light. The _electric and magnetic fields_ are the medium for light.

[@SUMANPOUDEL-BCE]

So there are charged particles everywhere in space that creates those fields......oh... And I thought space was empty😁😁😁

[@IamGhede]

Hmmm. Would we be able to use gravitational waves like a seismometer? Can gravitational wave reflect or refract?

[@moiquiregardevideo]

Gravitational waves are oriented like sound in air and Earth quake waves under ground. This is in sharp contrast with electromagnetic waves which are polarized. A black body radiator emit photons oriented at random, but each photon oscillates horizontally or vertically or other specific angles. They occupy space in the plane of oscillation that correspond exactly to their wavelength. Gravitational waves have no frequency or wavelength. Actually, when two massive object rotate around a center of mass, they effectively create an oscillating gravitational wave with a frequency equal to 2x the rotation speed. Since the two mass are unequal, the oscillation appear as two distinct amplitudes which repeat : large/small/large/small, etc Gravitational waves push and pull objects as they travel thru space.They are not affected by matter and are not deviated by black holes. They just travel at the speed of light, decreasing in intensity at the same rate no matter if they go thru empty space or thru any obstacles which would absorb electromagnetic radiation. If a strong gravitational waves would hit the Earth, people on the globe located on the front of the wave would feel a vertical wind blast followed by a sudden pull up of the ground quickly followed by zero gravity then a short pulse of feeling heavier. Somewhat similar to those Earth quake that are triggered deep under ground.

[@ashleyhughes5822]

for flip sakes. ive been watching your videos for 2 weeks straight.(ps there awsome) my friend told me centrifugal force does not exist. i was like. oi bugger off, yeah it does. then i watch your vid. and everytime i need to know something else. wanna know about gravitational waves.... first know what light is ect... .WELL THAT SETTLES IT. im going to uni to figure this out, once and for all. im already at uni for human bio. i zen master would tell me the cup im trying to fill...has no bottom

[@ScienceAsylum]

I'm glad the videos are helping :-)

[@FoxxyCZ]

If time "stops" inside the event horizon, how would the singularities from the two black holes ever come into contact? Does that mean that the idea of time slowing down near a black hole is false?

[@ScienceAsylum]

Time doesn't stop inside black holes: kzbin.info/www/bejne/r4G0hqerideUrtU

[@ScienceAsylum]

You have to remember this is still relativity. Time is relative. When we say time slows near a black hole, we're actually saying time slows near a black hole _relative to a distant observer._ You always have to define an observer. If you don't, then it gives the impression that there's a "correct time" and a "wrong time," which isn't the case. Both observers are correct even though they disagree. That's relativity.

[@luithedude3300]

How can I get that crazy clock behind that crazy guy?

[@MikeCPeters]

These videos contain a lot of good tuition. Please can we have a version for adults? One where we are not hectored or treated as 'crazies' That would really be something nice! Good stuff, but IMHO, spoiled by treating us as American teenagers

[@rossfriedman6570]

How could ligo be made that precise? How do you know gravitational waves from seismic activity?

[@bonemasterj]

If the colliding black holes lose mass as energy (gravitational waves), where did the particles that make up that lost mass go? Each black hole must have had a finite amount of particles before the event, right?

[@alexandernitz]

To clarify, the gravitational waves don't come from inside the black hole and so aren't somehow taking out something that was put into the black hole. They come from the spacetime outside the black hole. Your fundamental question remains though, and you can get an approximate sense by analogy to 'binding' energy. Gravity has a negative binding energy. That means two particles far apart have higher energy than those that are close together. This should be clear as it takes energy to pull them apart. The final black hole is less massive than the naive sum because there is a negative binding energy and the now 'freed' up energy has been emitted as gravitational waves. A very similar thing can happen with charges for example. A hydrogen atom (which is a bound proton + electron) is in fact *lighter* than the mass of a proton and electron if they were isolated on their own.

[@hardino0311]

Yo, your the only one I know that doesn't have dislikes haha good jon

[@dirremoire]

Now I know I’m stupid. I can’t even understand it when it’s explained by a crazy person. Great channel by the way.

[@ThisNoName]

LIGO is two and half miles ... you learn something new every day

[@psquare2260]

(1) What happens to all protons and electrons before neutron star is created? (2) When black hole sucks any mass that comes close, what happens to protons in that mass. (3) I remember reading neutron = proton + electron. Is that correct?

[@ScienceAsylum]

I would _not_ say "neutron = proton + electron." I _would_ say "proton + electron -> neutron." They become the neutron. They're not the same thing. kzbin.info/www/bejne/gZWpoax7e612e68

[@davidmcphee7558]

Might just be me but vibration can be felt. A 3rd way of detection of waves. I've ponsder that question for

[@davidmcphee7558]

My bad. Hit the send. To finish : a while. It's the different magnitudes that our bodies can sense. And wow what a mass defect 3 solar masses. By the way YOU ROCK.

[@akshatsatti3873]

I actually like Voltron because it's kind of fun

[@zaheera6899]

I have a doubt. Ligo detects variation in 'space' if 'space' was a fabric like thing that can shake LIGO's arms. But Einstein relativity talks about space-time fabric according to which if space expands than time slows down to keep speed of light constant bcoz C=d/t. Now If there is gravitational wave in space-time fabric which moves one of the LIGO's arm slightly. Then the time slows down a bit to make both lasers reach the detector at same instant. Hence there should not* be any interference pattern. Don't you think. Since Space itself doesn't expand its space-time that expands.

[@Misfiring89]

Gravity bends space, and in turn this slows the local time for anything within that space. But gravitational waves doesn't bend space, it very slightly expands it. Space expansion/contraction doesn't do anything to time.

[@uniteddigitalsolutions8006]

Did all of the 3 solar masses convert into a gravity wave? whuuuuut.... thanx for making my brain a little crazy ;)

[@dryan89]

Can someone help? If two black holes collide they create a significant cosmic event and we use LIGO to detect the gravitational wave - amazing technology. Here's the bit I don't understand, using an analogy - the black holes colliding is like dropping a stone in a pond, the water ripples to the riverbank, equivalent to where LIGO detects the waves. What in space is represented by the water in this analogy, or what propagates the wave information in space?

[@ScienceAsylum]

Space _itself_ is the water.

[@dryan89]

@@ScienceAsylum I’m still unsure. Water is made of matter and can transfer the energy, what in space transfers the energy? Great shows BTW.

[@ScienceAsylum]

We don't know what space is, only what it isn't. We know it isn't matter. We know it can transfer energy because we've literally measured it.

[@dryan89]

@@ScienceAsylum I understand, thank you for your time.

[@christopherstewart9874]

Fool on the Hill question: Are not spring and neap tides created by gravitational waves which result from the sun and moon being in line with each other (spring tides) and at 90 degrees from each other (neap tides)? Conceptually, binary super massive black holes would create gravitational waves from their rotation, not from their collision. Their collision would send a wave of some type of energy, but it wouldn't be gravity. Edited to state I meant black holes would create gravitational waves from their orbits, not their rotation.

[@ScienceAsylum]

No, the tides are caused by regular old gravity, not gravitational waves. I talk about this briefly in my tidal locking video: kzbin.info/www/bejne/nJrZdKaqnL2fetE

[@christopherstewart9874]

@@ScienceAsylum Yes, tides are caused by gravity. However, the effect of the sun and moon being in alignment and out of alignment (with respect to the earth) periodically is the same as orbiting black holes being in alignment and out of alignment with respect to an observer. In both cases the resultant change in gravitational pull will have a regular period and wavelength. i.e. a wave. The point is not that gravity causes tides, but that the regular increase and decrease in the gravitational pull (which is my Foolish understanding of the gravity wave) is what causes the difference between spring tides (higher high tides) and neap tides (lower high tides). At 3:11 in the video you state that two black holes orbiting each other create gravity waves (although your graphic looks like black holes revolving in a plane perpendicular to the observer, in which case the observer would not notice the waves at any great distance). The gravitational waves would be most noticeable to an observer in the same plane as the orbiting black holes (so maybe that early graphic wasn't as bad as you suggest). I may have been confused by all the videos I have seen about gravity waves referencing orbiting black holes, which suggest that the gravity waves are caused by their orbits rather than their collision. If it was the collision that caused the gravity wave, you wouldn't need two orbiting black holes - any two colliding celestial bodies would cause a "gravity wave." Also, did the LIGO detect the collision or did it detect the wave caused by the orbits when the wavelength finally got short enough for their equipment to detect it (just before the collision). Seems like it might be analogous to radio waves and the length of radio antennae. My Fool on the Hill conjecture is that the wave is caused by the orbits around each other rather than the collision, in which case the earliest, simplest tool to measure gravitational waves was our own ocean.

[@helium73]

For some reason when the trailer for Cloverfield came out I thought it was Voltron. So all that math was necessary to measure the wave. The detectors didn't just move in relation to each other a fraction of the width of a proton?

[@withernator]

I love his positivity