Relativity & Gravity - The Complete History

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Einstein (and his friends) came to some pretty crazy conclusions about gravity. By the end of this video, you'll have no choice but to come to the same conclusions. We'll start with a little background though: From Galileo in 1632 all the way to Einstein in 1905 and 1915.
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VIDEO ANNOTATIONS
The Gravity of the Situation:
• The Gravity of the Sit...
What the HECK is Light?!
• What the HECK is Light?!
Falling off a Merry-Go-Round:
• Which Way do you Fall ...
Relativity Playlist:
• Einstein's Relativity
Comment Responses: Relativity
• Comment Responses: Rel...
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LINKS TO COMMENTS
Victor De Lima:
• The Gravity of the Sit...
Kevin "Knowbuddies" Palmer:
• The Gravity of the Sit...
madweap:
• The Gravity of the Sit...
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IMAGE CREDITS
Logo designed by: Ben Sharef
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Pluto from New Horizons:
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Back to the Future II:
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Dwight from The Office:
www.gym-talk.com/wp-content/up...
Galileo:
commons.wikimedia.org/wiki/Fi...
The Vatican Painting:
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Pope Urban VIII:
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Plague of London:
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Newton:
commons.wikimedia.org/wiki/Fi...
Principia Mathematica:
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Maxwell:
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Michelson & Morley:
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Einstein 1905:
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Apollo 13 Screenshot:
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Grossmann & Levi-Civita:
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Einstein 1916:
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David Hilbert:
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Опубликовано:

14 янв 2016

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Комментарии : 932

@harveyrichard2007 4 года назад

I can summarize you with two words : RIGOR and FUN. You choose your words extremely carefully, you have a deep, deep understanding of physics, yet you have a real, real talent as a standup! You have mastered this quote from Einstein : make everything as simple as possible, but not simpler.

@FrancisZerbib 7 лет назад

For years I watch science videos on RU-vid. You are the best and most pleasant presenter, without giving up any rigor of the subject you deal. Thank you

@ScienceAsylum 7 лет назад

You're welcome! and thank you for the comment. Glad you like the videos.

@riteshshinde3092 6 лет назад

Indeed he is..

@DestroyerWill 6 лет назад

Yeah I agree he's great, such well thought out and put together videos.

@Bossqwerty 6 лет назад

amazing that youtube is full of so much shit, yet every now and then you can find a quality channel. its a shame its so hard to find

@richardhare1734 4 года назад

The Science Asylum One is on a space ship that will circle the planet in one minute and is looking at a clock at exactly 12.00. Person launches and returns in 1 minute. The clock will say 12.01 but the clock on his spaceship will say a slightly different time. Isn't time only slowing down from one perspective?

@isaacbernath 5 лет назад

It boggles me that such clarity isn't more appreciated. This is way better explained than most of those silly animations others use

@genesisproductions4974 6 лет назад

This video needs to be 1 hour long

@orionred2489 6 лет назад

It would be if you were moving away from it fast enough.

@n.jurenic 6 лет назад

that's deep

@howardOKC 6 лет назад

No, it needs to be 2 weeks long.

@bachirmessaouri4772 5 лет назад

@@orionred2489 You nailed it!

@siobhanbartz2688 4 года назад

You should do videos on Brilliant.org. I have the app and enjoy Study With Me videos. It takes less time because usually the people are in college. I really like your videos though. Brilliant has math and science courses and you learn by doing. It is more complicated than school classes because they don't tell you how to do any of the math before you solve them. You must figure it out yourself.

@AlexSmith-gr4hp 8 лет назад

Thanks. This made sense and I only have a slight dull ache in my head.

@ScienceAsylum 8 лет назад

+Alex Smith You're welcome!

@user-wl8kk5kn6v 3 года назад

just dont google "slight dull ache in my head". lol

@AdamR-q3g 6 лет назад

New sub here. Stumbled onto the channel yesterday and I've binge-watched it since. Thanks for offering clarification on fascinating subjects.

@iamdenice1 8 лет назад

I watched the whole thing. I never understood this stuff before. Thanks. My husband watched it too but he claims he already knew this. I don't believe him. I like that you threw in the history too. Gives my brain a breather in trying to absorb the physics.

@ScienceAsylum 8 лет назад

+George Kastanza Sometimes you just can't understand the physics without knowing where it came from.

@andyskeels8539 5 лет назад

@@ScienceAsylum ....to the Timeline!

@fishrod6298 7 лет назад

You are a talented man, nice work .

@ScienceAsylum 7 лет назад

Thanks!

@charliemorrison9393 7 лет назад

I just wanted to say, that now I understand relativity (after watching a lot of your videos). So thank you.

@ScienceAsylum 7 лет назад

You're welcome!

@zoltankurti 5 лет назад

@@joeym9169 you are correct till the point you start bringing examples.

@marcoottina654 3 года назад

I'm glad to see that the quality of f your videos hasn't drop down, it's rising! Your ability to explain, both verbally and visually, are inspiring to say the least! Thank you for all of your work, congrats

@ScienceAsylum 3 года назад

Thanks. I always try to be better than my past self.

@marcoottina654 3 года назад

@@ScienceAsylum Glad to hear that :D IMHO, you are already awesome and the combined work of you, PBS Space Time, Neil deGrass Tyson and others helped me a lot! Keep it up, you are surely appreciated :D

@davidmudry5622 Год назад

@@ScienceAsylum Problem...Gravity doesn't pull down, but that's how it is taught in schools. Since no force is pulling down, and downward weight is therefore the reaction to upward acceleration, then Huston we have a problem. That means not a single thing can fall unless FIRST and foremost the thing that supports the thing from under the thing, is FIRST removed. That's why all building demolitions are started at the bottom, except of course on 9/11. Only the third tower, building 7, fell where the support at the bottom gave out first.

@keshavdasggp 5 лет назад

I came up to your youtube channel accidentally but now I am fan of 2 things - Einstein (his physics and maths) and your mind blowing videos.

@Slash1066 4 года назад

This content is so good yet not enough people are ready for it, it makes me sad that the views and subs are still lower than they should be. Thank you Nick for teaching me things nobody else could.

@ScienceAsylum 4 года назад

Happy to help 🤓

@terigonUSAS12 3 года назад

yes

@afsheentahira3241 2 года назад

i watched hundreds of videos on relativity and i think it’s safe to say that nothing can come close to this. brilliant explanation omg thank you very much!

@danno1800 6 лет назад

Outstanding presentations! Thank you very much.

@Ruminations09 8 лет назад

Thanks for combining these videos into one. Making the majority of future videos about this length would be appreciated.

@ScienceAsylum 8 лет назад

+PokemonTom09 I probably should have just done this from the beginning, but I always thought shorter videos were more "shareable."

@davelong1139 8 лет назад

I like the short videos. But its nice once a series is done to put them together so its easier to find and watch.

@Ruminations09 8 лет назад

***** I guess from an outsiders perspective, they are more likely to watch a shorter video, that's definitely a good point; but, at least in my opinion, for people I already enjoy watching, content that takes up more of my time I tend to prefer.

@nevergonnagiveyouup5239 5 лет назад

You forgot Hendrik Antoon Lorentz Hendrik Antoon Lorentz was a Dutch physicist who shared the 1902 Nobel Prize in Physics with Pieter Zeeman for the discovery and theoretical explanation of the Zeeman effect. He also derived the transformation equations underpinning Albert Einstein's theory of special relativity. Born: 18 July 1853, Arnhem, Netherlands Died: 4 February 1928, Haarlem, Netherlands Full name: Hendrik Antoon Lorentz Field: Physics Awards: Nobel Prize in Physics, Copley Medal, Rumford Medal, Franklin Medal

@no_more_free_nicks 6 лет назад

I will put this video on my fb. Maybe somebody will have a look.

@davelong1139 8 лет назад

Nice video, I'm glad you put all 3 together, makes it easier to watch. Keep up the good work.

@ScienceAsylum 8 лет назад

+Dave Long Good to know :-)

@riteshshinde3092 6 лет назад

Chandler i understand your concepts than of my professor..you are the best👍👍

@ScienceAsylum 6 лет назад

Why do you keep calling me "Chandler" ??

@riteshshinde3092 6 лет назад

Because nick you explain all the concepts hilariously and i love the way you present them..and more importantly you look and sound like matthew perry to me..ll😍😍

@ScienceAsylum 6 лет назад

HAHA!

@faizanrana2998 6 лет назад

Your joke is drier than Gandhi's flip flops.

@PatricioHondagneuRoig 5 лет назад

I'm so glad I've found this channel. I already follow a lot of science channels but this is one of the most entertaining yet educative I've seen. Keep up the good work!

@NikoGoran 8 лет назад

I've subbed this channel yesterday,straight line... steady speed.... curved space time...got it. great content BTW

@xyzsccr 6 лет назад

Great Videos! Well explained and entertaining. Love how you answer questions that seem simple but that a lot of us are probably asking!

@account1307 5 лет назад

In all seriousness, why not get this guy to do the next series of Cosmos..????? He would maybe have to tone down the energetic craziness (which I friggin love don't get me wrong) just a tiny bit for a documentary format,but the dude clearly has a TONNE of passion for science and astrophysics and physics. I would watch the heck out of it. It would be THE BEST THING EVEEERRRR.

@ScienceAsylum 5 лет назад

I could do it... but, you're right though, Cosmos is a _totally_ different energy level. They'd never ask though. They want someone more famous.

@bjjthaiboxing 2 года назад

After reading some comments, I paused and asked myself, how is this possible? How can a source of information this good, escape my attention for several years? I digress... This channel has become my new addiction!

@xelaneb 6 лет назад

I agree with others before me; you are a great presenter and somehow manage to convey the same information in much less time that it takes others to do the same, too bad your videos don't have the exposure that some of the others do.

@Slash1066 5 лет назад

You should have way more subs, your content is both engaging and thought provoking

@prashishdhungel3031 5 лет назад

Well, this channel worth millions of subscribers..............

@idhunailla7757 4 года назад

I was thinking to myself how good it would be if your videos were longer. I'm glad this you took it up for the viewers. My bed time channel, everyday

@ScienceAsylum 4 года назад

Yep! Now that I'm doing this full-time, I'm trying out slightly longer formats. It's going very well.

@rekieg9951 6 лет назад

Thanks a lot.This is where I had the most valuable knowledge about relativity.Nice presentation and mind catching explanations.Thanks again.

@yeahyeahbell6417 4 года назад

I wanto to thank "chauffeur clone" for asking the same questions that came up in my mind 😄😁✌ I wish I had a teacher like Nick during my childhood

@Smbdiwhodefinitelyhasamustache 3 года назад

Sometimes i watch your videos and something that was always beyond me suddenly makes sense. I think that the way you present things are on the same wavelength as my thought process. If only i could actually take detailed lectures like this.

@adamcunningham432 2 года назад

The light bulb went off in my head when you curved the y-axis to match the time path of the car. Genius.

@ProfeARios 3 года назад

"It's OK to be a little crazy" LMAO!! I love this channel!!!

@user-be6oi3nn9l 6 лет назад

I'm very confused but I love your videos

@ADEpoch 5 лет назад

I've been looking at all sorts of explanations on General Relativity for many years. And I'm still confused. But I know the lingo better!! ;-)

@macbuff81 5 лет назад

I wish I had you as a physics teacher back in high school. I utterly failed at that subject, but when I listen to your presentations it all makes sense (yea, sometime I have to watch the videos multiple times to get a handle on the principles, but I do get it eventually). Physics lessons can be educational AND fun. Something I would have never said back in high school. Keep up the good work! Yes, I am also a bit of sci-fi fan

@imsidetracted 6 лет назад

i think your videos are as long as they need to be. arent they? i recently stumbled across them and ive got a lot of catching up to do, but so far so AWSOME!

@ScienceAsylum 6 лет назад

Most of them are... a few fell short.

@moma8956 8 лет назад

Insanely explained Nick =D Great job

@jgranahan 6 лет назад

Very nice. After combing thru other you tube playlists like pbs spacetime, it is nice to hear a refreshing take on relativity. Not crazy at all! Lol

@valemaxema73 3 года назад

Man. Screw the dumb ball/elastic trampoline example everyone comes up with when talking about space-time curvature. Now THIS is how you explain it and make sense out of it in an easily understandable way. You opened my mind, very well deserved sub

@solapowsj25 3 года назад

Wow 😮! Added: Relativity deals with motion at 'c' in free space, where reference frame may be regarded as a 'graviton'. Both photons and gravitons are virtual. Both have pure energy, no mass. But the graviton is an anchor, fixed at a point 📍.

@photelegy 5 лет назад

friend in my car: "Wow, your car has great acceleration." me: "No, I only just created artificial gravity 😎"

@ScienceAsylum 5 лет назад

Ha!

@mahianishraq2501 6 лет назад

Bro you're so funny! Your channel is thousand times better that khanacademy!!!! Hoping more from you

@offjofce 8 лет назад

This video gives a really great and unbroken overview of the topics involved, it is awesome sir! :)

@marcuspradas1037 Год назад

Brilliant! In most of your videos, your explanations are better or not so good as other sources. But in most cases, you give me new different points of view for the same issue. My poor coordinate system thanks you.

@ppugalia6492 6 лет назад

So the curved line on the spacetime diagram is what space time curvature means. Wow.

@Xayuap 3 года назад

wow, genius. this works so well with the music

@gauravmaindola4571 6 лет назад

God Level Explanations and Clarity.....True Genius....

@dakicdanilo 6 лет назад

man, you are genious, thanks for videos..!

@onelvisdelarosa4116 7 лет назад

This video is gold...

@terigonUSAS12 3 года назад

platinum*

@CCumva 4 года назад

Why is it the first time I hear this explanation? So intuitive! Totally awesome!

@ayoubsbai6339 6 лет назад

You are definitely the best physics videos maker on RU-vid :)

@Tetracarbon 8 лет назад

Wait. Mass isn't invariant? Does this mean observed mass can change from a different frame of reference? (Is this a dumb question?)

@ScienceAsylum 8 лет назад

Yes... well, it depends on what you mean by mass. When I say "mass" I either mean "resistance to acceleration" or "gravitational ability." With either of those, yes, observed mass can be different depending on your frame of reference. Sometimes when other people say "mass" they actually mean "rest mass," which is invariant. In my opinion, the adjective "rest" is necessary. Also, it's definitely not a dumb question. It's a common question, but that doesn't make it dumb. This is weird stuff.

@maprembodhi6464 5 лет назад

@@ScienceAsylum But mass is constant

@yassinrajjaf 5 лет назад

@@ScienceAsylum I thought mass is never changing? As opposed to the weight?

@panoskaoukis7668 5 лет назад

Hackmast3r as Science Asylum stated Rest mass is invariant not mass in general!

@prabhdeepkaur6793 5 лет назад

@@ScienceAsylum can u explain why energy is variant?

@omsingharjit 6 лет назад

What you mean by spacetime paths !!! If space is not relative then it should be uniform in whole universe , but it's not the case , because near mass spacetime is bending . And far Distance between galactic clusters spacetime not only extracting but , It's Accelerating . So how ????? Spacetime should be relative ??? You confused me ?

@ScienceAsylum 6 лет назад

Space is relative. Time is relative. _SPACETIME_ is absolute.

@omsingharjit 6 лет назад

The Science Asylum yes

@midnightdragonfly9707 3 года назад

I absolutely love this, Nick!

@cesarjom 2 года назад

This is still one of the best explanations of SR and GR, especially how you describe spacetime curvature to represent the motion of things thus replacing the Newtonian concept of force of gravity. Thank you for the great work!

@meghrahman8599 6 лет назад

& the most important question is if time is a fourth dimension then how does it curve by mass, where time inside of it?

@samarthsai9530 7 лет назад

If gravity is what we learn from GR(I've gone thru the very basic maths) then WHY ARE WE SEARCHING FOR GRAVITONS(are we)? Clarify please sir?

@ScienceAsylum 7 лет назад

Because general relativity and quantum mechanics don't get a long very well. We would like one model to apply to everything, so quantum physicists are trying to look for a model of gravity that fits into quantum mechanics.

@ronaldderooij1774 6 лет назад

The universe was pretty boring for 380.000 years after the big bang though.

@SkylerLinux 3 года назад

Funnily enough this makes a good follow up to your Gravity is just dilated Time video

@DavidMendoza-pd3pr 4 года назад

Thank you sir. I now have coherent conversations with my brother who is about to graduate from college. I talk to him about things I learn from your videos and he gives input and even shows me the math equations and I even give him some ideas by asking questions.

@UltimateBargains 6 лет назад

The shortest distance between 2 points, a straight line, is described by the arc of a photon. Unless the squirrel is falling at the speed of light, it is not moving through a straight line. Gravity is an actual curvature (displacement) of space caused by the presence of mass. That's why gravity appears to be a force, but has no energy potential of its own, like the electric or magnetic fields. The only energy you get out of gravity is the energy that was put into it. A hydroelectric dam generates electric energy that originated from solar thermal energy that evaporated the water and lifted that water above the dam. Hydroelectric energy is really solar energy, not gravity energy.

@ronaldderooij1774 6 лет назад

The term "arc' is correct, but a bit misleading. You are talking about space. This video is talking about spacetime. The photon will not "arc" in spacetime diagrams. Only acceleration will "arc". You continue to mislead by saying that gravity displaces space. No, it displaces spacetime. Indeed gravity is a consequence of mass (=condensed energy). But wether or not this means that gravity has no potential of its own, is open to debate still. In cosmological terms it is even negative potential in some models. Thanks for the heads up to hydroelectric energy. I did not realise that, but you're right.

@earlsandwich5667 5 лет назад

Didn’t voyager pick up speed and thUs more kinetic energy as it shot past Jupiter in the 1970S. That would be an example of gravity increasing the energy of an object?

@daviddlamini4290 7 лет назад

at 6:40...doesn't inertia play a part here?

@ScienceAsylum 7 лет назад

Inertia does play a roll from someone standing outside the car on the ground, but not someone inside the car. We have to be able to explain this from both points of view.

@opaaaaaaaaaaa 7 лет назад

The Science Asylum Are you saying that inertia is a type of gravity??

@oregonorganics9079 6 лет назад

Inertia is counter space, or you could say it is what we call dark matter.

@smirkovs120 6 лет назад

The Science Asylum explain it why... if i put my book on head and run and drive it will fall!!

@xDR1TeK 6 лет назад

The answer and counter question then an answer. This is now my favorite channel.

@tanmoykundu9201 6 лет назад

This video really help me understand. Thanks. Keep up your good work.

@ggeasy8499 5 лет назад

I still don't get it. I mean, I totally understand what you've said, it's really really good. You are amazing. But I don't get the other thing. I don't think you earn much money from RU-vid, but you still do great videos. It's just you are too good. You clearly do things like this because you love science. And that's what I like the most. Thank you!

@ScienceAsylum 5 лет назад

Thanks. I work really hard on these videos. Even though I don't get a ton of views, some viewers have been willing and able to donate on Patreon. It's something I'm incredibly grateful for. It makes it financially possible for me to keep the videos on a regular schedule.

@lfvkx3929 8 лет назад

can you make a video about black holes, worm holes and all those crazy stuff about space and also is there any way to create a positive and negative charge, so it is like as if i'm creating my own worm hole!!

@CTCTraining1 5 лет назад

Lucid by name and lucid by nature ... thanks so much for unpacking the curvature question so clearly.

@dominicstewart-guido7598 3 года назад

7:39 WOAH REVALATION. After years of scounging through the internet for GR for the layman, this is something I somehow never really considered. Crazy!

@gemnex 8 лет назад

If gravity is bending space time to change what straight lines are, then is that why gravity can cause time dilation around black holes?

@ScienceAsylum 8 лет назад

That's exactly why... and, technically, gravity causes time dilation no matter how strong it is. The Earth is doing it to all of us right now, but it's too small for a human to notice. GPS satellites have to factor it into the data they're collecting though.

@felipec 5 лет назад

In Earth, the time at your feet moves slower than the time at your head. This curvature makes a static object in the true spacetime geometry appear to be moving down, in our three dimensional geometry.

@madspetersen1708 6 лет назад

Fantastic. Good idea with a longer video

@briancannard7335 4 года назад

You just blew up my mind the second time at 8:21 reminding that Hilbert (who has filled the axiomatization gaps in Euclid's geometry in 1899) has helped Einstein to make his GR! Please, tell James Burke (BBC Connections series) about that :-)

@Metastate12 5 лет назад

I've seen a lot of your videos. Great job man.

@fabianespinozaviveros8710 Год назад

I love your videos! thanks for making me (a little) understand better... well... this!

@ScienceAsylum Год назад

Glad you like them! 🤓

@quixotic7460 2 года назад

i'm binge watching all your videos. this is better than Netflix

@itskelvinn 8 лет назад

Great to see you make videos to allow people to learn physics

@OrangeMicMusic 3 года назад

Now, because of this video I finally understand how gravity works. Thank you. For years I tried to understand how gravity works. I watched many, many videos, I read some textbooks...but nothing was coming to light. They were either too complicated, or not well explained.

@jeffbloom3691 6 лет назад

I really enjoy your videos. They're are concise and also entertaining. The "clones" are also a funny addition.

@AnexoRialto 6 лет назад

Talented presenter and good explanation. Keep it up.

@anubhavbansal8922 7 лет назад

changed my science concepts overall love your video

@user-bl1pw2th4l 5 лет назад

You're a GENIUS and totally should do this series on Netflix!!

@shamik02M 5 лет назад

Here I am again in 2019. This stuff is brilliant!

@barbooosa 2 года назад

"the only way they can both be right is if we are wrong about everything else!" that was an awesome quote!

@dinooplal3519 5 лет назад

Fentastic Video. Well explained

@megacube5482 4 года назад

out of all relativity vids I watched , this explained the best

@kato_dsrdr 2 года назад

Kinda mindblowing that legendary physicists who discovered these stuff are alive at the same time and knew each other..

@thisunsudaraka7540 5 лет назад

The best video on RU-vid!

@kaden7776 6 лет назад

This is a great video. Explains the concept well. Michael from vsauce also did a great one like this. In "which way is down"

@JazzCurious 3 года назад

The speed of your ideas is moving in full acceleration than the energy of my brain, just like the speed of light. I really need to find fuel to energize my brain to be able to catch up your ideas. I indeed believe that someday somehow I can reach your ideas. Thank you for sharing your energy to us.

@gernblenstein1541 6 лет назад

Simply amazing videos.

@youthised58 4 года назад

Glad someone else figured this out. I don't have the TIME for it and the SPACE in my head is limited. I don't have worry my little head about it because most people aren't concerned about the GRAVITY of the situation.

@moiquiregardevideo 6 лет назад

You are the first who took time to analyze the deep implication of Einstein philosophy of physics: - gravity is as fake of a force as centrifugal force or the artificial gravity of a rotating space ship. In all of these cases, we can represent the effective force that an object experience as a "curved space-time". The dice or ball attached to the mirror in the car is getting a slanted gravity by simple addition of vectors, it's space-time fabric is just inclined, notr pointing toward the center of planet Earth anymore.

@kaseyfranken5976 6 лет назад

I remember reading about a photonic boom in a certain fluid I remember wanting to know more. Lol I think it would be a good video ;) keep it up I love when you pull out the content that makes me take a step back and say woh what!?

@tenzinnorgyal2183 3 года назад

Amazing. Thank you so much.

@johnconnell8436 3 года назад

That was awesome! The lightbulb in my head just came on! Dimly, but on nonetheless. 😆👍🏻

@rohanbirajdar6516 8 лет назад

Great! Make more videos like this...

@blackstone1776 6 лет назад

I dont always sub, but when i do, its because of excellent content.

@user-re4pi4kq2e 6 лет назад

I love it to get mindblown by you! :D

@arielol89 5 лет назад

Thanks for the video 💪🏽 I had to watch it 5 times to understand...

@user-ow1mw9ih7i 6 лет назад

please make 1h of this version but with slower talk speed and explaining more bits so engineer can understand lol.

@chrisbovington9607 5 лет назад

For decades I have kept coming back to this topic now and then. After a few attempts I understood about half of what was being said. Years later I understood almost all of it but could never quite get the last piece of the puzzle. Your diagrams curving the time axis finally gave me (at least part of) the answer! Thank you! I remember rule 4, but I note that the curved time axis in the diagram is actually a mapping of another reference frame onto our own reference frame. Does that mean that the spacial axis for another reference frame can also curve when mapped onto ours?

@ScienceAsylum 5 лет назад

It absolutely does mean that. Any space or time path can be curved. It's just that time is the dominant component of any path.