WSU: Space, Time, and Einstein with Brian Greene

Рет қаралды 2,019,705

3 жыл бұрын

Join Brian Greene, acclaimed physicist and author, on a wild ride into the mind of Albert Einstein, revealing deep aspects of the world that defy everyday experience. Using a visually rich canvas of animations, Greene leads you through all the startling conclusions of special relativity, from time travel to space warps to E = mc2. In the span of 2+ hours, this short master class will change your conception of reality.
This is a mostly non-mathematical version of the WSU Master Class “Special Relativity with Brian Greene.” • WSU: Special Relativit...
#WorldSciU
The Special Theory of Relativity - 00:05
Speed - 00:05:50
The Speed of Light - 00:18:23
Relativity of Simultaneity - 00:27:42
Time in Motion - 00:37:42
How Fast Does Time Slow? - 00:47:49
Time Dilation: Experimental Evidence - 01:05:31
The Reality of Past, Present, and Future - 01:14:37
Time Dilation: Intuitive Explanation - 01:28:38
Motion's Effect on Space - 01:32:34
The Pole in the Barn: Quantitative Details - 01:49:48
The Twin Paradox - 02:10:39
Implications for Mass - 02:19:17
Special Relativity - 02:29:06
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Пікірлер: 771

@wnderer4365 3 жыл бұрын

thanks for the 2.5 hours no ads non stop science... :-)

@orlandopammit6216 3 жыл бұрын

@@fangare aĹl

@kevinnguyen3877 3 жыл бұрын

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@kevinnguyen3877 3 жыл бұрын

@joshuamccleery9976 2 жыл бұрын

S @@fangare oh yf. L V aaXxvdvc do

@joshuamccleery9976 2 жыл бұрын

Do a ww

@yishmiraibenisrael8771 3 жыл бұрын

I love you Brian Greene, you are a gift to the world. May your Name be written in the Book of Life 🦁🔯👑!!!

@variable7833 Жыл бұрын

One of the best episodes of JRE was with brian greene. He rules.

@grovermatic 3 жыл бұрын

What an absolute joy that we can summon at will and enjoy lectures from not just Brian Greene, but almost all of the masters of science from the comfort of home. Just a few decades ago people would have clamored to attend a lecture like this.

@earljohnston9900 2 жыл бұрын

Really informative information to laymen

@kevinodonnell5352 3 жыл бұрын

You are one of the greatest educators of ANY generation. We can't thank you enough for your open minded yet skeptical and curious view of nature and your passion to share it with everyone for free. Carl Sagan would be proud.

@davidhughes2960 2 жыл бұрын

No body does anything for free

@ImInfluence 8 ай бұрын

@@davidhughes2960 Factually untrue.

@brianlin7108 3 жыл бұрын

He had an excellent way to present physics to common folks

@ElasticEquator Жыл бұрын

Huivhbhibhhuuvhhhhhhvuh

@ElasticEquator Жыл бұрын

@cristiansontay2680 3 жыл бұрын

Dr. Greene Absolutely amazing course. Connection between time, space, mass, energy and speed of light is very clear. Many thanks. Vijay

@lemmelovu 3 жыл бұрын

What a teacher Green is. Answers just about every common person questions that rises. He explains, then clears arising doubts and Repeat ! To call him genius is just a plain understatement.

@teeess9551 Жыл бұрын

I hope English is your second language ;)

@edwinpd0sot503 10 ай бұрын

😊

@edwinpd0sot503 10 ай бұрын

😊😊😊

@edwinpd0sot503 10 ай бұрын

😊

@summersu9274 3 жыл бұрын

I don't have words to express myself of how Dr. Greene is a talented teacher.

@brianli286 Жыл бұрын

You just did

@williamwalker39 5 ай бұрын

Yes, but what he is teaching is wrong. See the post at the top of the comments.

@SidharthMiddela 3 жыл бұрын

One of the best explanations on this topic. Simply Brilliant. Brilliantly Simple.

@rogerthompson9308 3 жыл бұрын

Dr. Greene has an amazing ability. He can take a complex subject, and make it understandable. Thank you for creating this awesome video. I'd recommend it to anyone.

@BradWatsonMiami 3 жыл бұрын

It's too bad Greene is a militant atheist. He's clueless on the 'theory of everything': GOD=GOOD=7_4 or FOD=6_4 (on Planet Nestor), cause of the BIG Bang-Bit Bang, GOD-guided evolution, reincarnation, etc. == The Infinite Conglomerate of Universes Theory - Creating Universes with BIG Bangs-Bits Bangs/Supermassive White Holes-Quantum Tunneling Wormholes == combining GOD/Nature, Ancient Religions, Physics, Astronomy/Cosmology, General Relativity, Quantum Mechanics, Chaos Theory, Chemistry, Biology, Mysticism, & Philosophy) This Universe exists because it's our playground. Information can be created but not lost, only shared, kept secret, preserved, and transferred. 'The BIG Bang-Bit Bang/Supermassive White Hole-Quantum Tunneling Wormhole' inflation-expansion of energy and quantum information into the void 13.77 billion years ago was a supermassive white hole spawned by a supermassive black hole at the heart of a galaxy in our 'parent universe'. This duality combines general relativity’s singularities of infinite density in a ‘Cosmic Egg’ birth of this and all baby universes within 'The Conglomerate': multiverse without random bubble universes and parallel worlds. 'In the beginning', the Planck density of the core of a SBH acts as a birth canal. 'Quantum bubble SBH-SWH seed transitions' are 'quantum tunneling umbilical wormholes' with energy-matter and data transformed/transferred, albeit scrambled and encoded. Our Universe is 1-in-2 trillion 'self-similar offspring' each with the same inherited physical laws (‘DNA’). The ubiquitous cause-and-effect 'circle of life cycle': birth-life-death-transformation-rebirth explains infinite space and eternity - a necessity. Reproduction is GOD/Nature’s simple plan to greatly spread life for everything from cells to universes." - Seal #1a of the "7 Seals" revealed as 'Beyond Einstein Theories'; see 7seals.blogspot.com . This has triggered The Apocalypse/Revelation - only the returned Christ & Albert Einstein reincarnated could produce it.

@abdulqadirahmedli610 3 жыл бұрын

God has said in the Quran; " And they urge you to hasten the punishment. But Allah will never fail in His promise. And indeed, a day with your Lord is like a thousand years of those which you count." (Quran, surah 22; ayat 47)

@jpgcz Жыл бұрын

@@BradWatsonMiami lmao go back to the fiction section

@arindamchakraborty6272 3 жыл бұрын

Amazing Dr. Greene. You have explained the mind boggling concepts in such simple terms. Kudos! I just realized that over 2 hrs had gone by. Time had slowed down for me... relativity!!!

@donaldolsen9571 2 жыл бұрын

Haha yeah right! An amazing presentation. I lost all sense of time.

@DocSeville Жыл бұрын

Simple? Dude.

@skyhidave 3 жыл бұрын

I finally get it! I'm 69 and after years of reading and watching, I finally understand (well sort of). In college I always ranked a great teacher above a genius in their respective field. Here you get both. Exhilarating.

@williamwalker39 5 ай бұрын

Except he is completely wrong. See the post at the top of the comments.

@harleygerken747 2 жыл бұрын

Mr. Green introduces and explains the basics of special relativity. Over the duration of this recording,. Mr. Green maintains great energy and enthusiasm for the whole damn lecture . He has a particular way of gesturing and motioning with his hands that, to me at least, conveys a good deal of passion and intuition regarding the topics he is holding forth on. On top of his ability to lecture, his examples are plentiful and really Mr. Green, I'm getting brief glimpses of a young Judd Hirsch peppered throughout.

@tacocruiser4238 3 жыл бұрын

ive tried to listen to this video 10 times and I havent got past the first 30 minutes without falling asleep lol. I'm really pissed because it seems very interesting.

@sankalpjadkar2272 3 жыл бұрын

The Revolution in teaching system is started !!! 🙂I am very thankful for it because it is open for everyone all over the world who have a burning desire to understand the UNIVERSE 🙏 like me!

@ctoan_ 3 жыл бұрын

Burning desire yes!!!

@kimjong-un4521 3 жыл бұрын

Yes, bro.

@damiensobczak4969 2 жыл бұрын

Beautiful presentation which demonstrates why people will always see things differently relative to where they are and what they are doing at any prospective point in time relative to someone else. Professor Greene, you are brilliant. I love your lectures 🥰

@nphp5052 3 жыл бұрын

Brian greene is an amazing teacher. I love his lectures.

@owen7185 3 жыл бұрын

Brian you've given me the inspiration to learn the math and the confidence to. I have discovered my passion

@famposiom 3 жыл бұрын

That's awesome my guy, its extremely hard to stick with, but I wish you the best of luck. If in a few years time you become a great mathematician or physicist, respond back to this and lmk!

@Travelswithgirlbear 3 жыл бұрын

This should be shown in every intro physics class in high school and college. He explains things that are so hard to wrap you head around with great visuals.

@terkfranks1538 Жыл бұрын

And he's still wrong.

@Thund3rr 11 ай бұрын

@@terkfranks1538 ?

@ImInfluence 8 ай бұрын

@@terkfranks1538How so?

@terkfranks1538 8 ай бұрын

@@ImInfluence time is constant

@terkfranks1538 8 ай бұрын

@@ImInfluence he is using one's perspective as if that changes reality. Your perspective is your point of view, example: if person is inside a one way mirror box and moving with a light clock - the person inside thinks they are stationary while the people outside the box KNOW the person inside the box is in motion. You wouldn't say the person inside the box isn't in motion (stationary), you would say the person inside the box INACCURATELY perceives they are stationary. So his explanation of why the light in motion would still register (as if it was stationary) is false. 👍

@erictko85 3 жыл бұрын

I havent watched this yet, I just found it and clicked on it. I will say I am excited to see this original video being put out by Dr Greene and World Science. Lets get creative and get the people to understand relativity. That includes me!!! Thank you.

@bntagkas 3 жыл бұрын

this is a very effective way of learning, from a great communicator, instead of a boring classroom for him to have the ability to take his time and put together a video, edit it, add effects if needed, etc, seems to make oldschool classrooms obsolete. combined with the ability to have massive q and a from students all around the world on any topic, it completely makes classic schools a dinosaurs approach.

@bigguy8586 3 жыл бұрын

There's so much more possible when your with students rather than screen sharing. Face to face is definitely better.

@bntagkas 3 жыл бұрын

@@bigguy8586 you know, the best is, face to face, 1 student to 1 teacher ratio, but guess what, theres about 10-100 million potential students for every gifted teacher, so you know...yea

@ti84satact12 Жыл бұрын

What is “boring” is relative from one student to another, eh? Or is it an absolute?

@ti84satact12 Жыл бұрын

@Saving Democracy who decides “good”?

@anothercomment3451 Жыл бұрын

yes, kids have loved disney graphics for generations!

@markjenkins6103 Жыл бұрын

love this man, real teacher, and scientist

@kingoffire9373 3 жыл бұрын

So glad he is doing this! We need more science popularizers who simply enjoy the beauty of it with his passion and willingness to teach it the best he can to the average person

@bitambukahussein4642 3 жыл бұрын

Whenever I see this guy's lectures, I am glad I learned English.

@marcosgibin4057 3 жыл бұрын

Não

@meltedmarshdaddy 2 жыл бұрын

@@marcosgibin4057 yes

@lindascanlan6317 2 жыл бұрын

Agree

@EnlightenedEyes11 2 жыл бұрын

Best lecturer ever

@Erik-rp1hi 3 жыл бұрын

What incredible insight Einstein had. His peers of that time must had been blown away by his ideas how the world works, after they accepted them.

@gsyamsri8122 3 жыл бұрын

They didn't accept it. He never even got the Nobel Price, for these ideas. Not even years after. There was NO acceptance at the time because people don't like to be blown away. So you may be right somehow...

@elongatedmusk3132 2 жыл бұрын

Relatively 😏

@anothercomment3451 Жыл бұрын

When an interviewer asked Al what it was like being the smartest man in the world, he replied, "I don't know (more truthful than imaginable), you'll have to ask Tesla." They were peers, but only 1 was funded by crazy elitists who have 'engineered' our world to ONE big record low.

@anothercomment3451 Жыл бұрын

@@gsyamsri8122 Well gee, Prez Obama got that prize for what he was GONNA accomplish. Maybe it's really just for bragging rights among the so-called elites.

@ZakisHereNow 2 жыл бұрын

I know these principles inside and out and still love watching Dr. Brian Greene explain them. Edit: He’s both earned and deserves the respect of the title Dr.

@davidmudry5622 Жыл бұрын

The twin towers had a factor of safety = 3. They descended at 64% of 1G acceleration. Therefore the integrity of strength was only 1/9 of what it was. However much mass fell outside the footprint. Integrity of strength was only 1/20.

@localtitans4166 3 жыл бұрын

Thank u professor u r helping a lot of students who r interested in physics

@kenn5624 3 жыл бұрын

Yes, Its so helpful.. I love physics and it's much interesting😍

@reessoft9416 3 жыл бұрын

Good to see someone who appreciates the material, instead of the usual dumb posters who seem to think they're cleverer than the world's greatest physicists.

@jimlaguardia8185 3 жыл бұрын

Thank you so much, Dr Greene. You are a brilliant teacher.

@pavankumar-ff9bo8zc5y 3 жыл бұрын

Wow. One of the best explanations I've seen on the internet.

@murallivengadasalamthevar1784 3 жыл бұрын

Finally we have arrived. This is how high school physics should be thought. It looks all so easy. Of course it took half a century and lots of refinement before, we finally got to this entertaining tutorial and lesson.

3 жыл бұрын

Looks easy does it? Sure dude

@michaelschmidt1223 3 жыл бұрын

What a phenomenal lecture! I was familiar with much of the content but your explanations give an easy to understand prospective relative to our everyday world.

@sovasova8520 Жыл бұрын

@_BhagavadGita Жыл бұрын

You couldn't ask for a better ambassador of physics than Prof. Brian Greene.

@williamwalker39 5 ай бұрын

Except he is completely wrong. Se the post at the top of the comments.

@_BhagavadGita 5 ай бұрын

@@williamwalker39 I can't see it. What does it say exactly?

@paulmoffett1759 2 жыл бұрын

I've been trying to really understand this concept for years. This has been the best explanation yet.

@paulmoffett1759 2 жыл бұрын

Don't get me wrong, my brain is still wrecked... But less so!

@terkfranks1538 Жыл бұрын

@@paulmoffett1759 it's hard to grasp because he's WRONG. time doesn't pass slower.

@williamwalker39 5 ай бұрын

@@terkfranks1538 are right . Refer to the proof at the top of the comments.

@geoden 2 жыл бұрын

A superb pictorial representation of Special Relativity explained and presented by Prof. Brian Greene. I noticed some years ago that Brian had a great talent for explanation, I think he even exceeded himself here, excellent work. N.B. There is a mathematical version of the subject also.

@PuleMC 3 жыл бұрын

Brilliant, started special relativity 2 weeks ago, I didn't believe everything I was reading till watching this video. Amazing🚀⌚

@jonnynelson5734 3 жыл бұрын

excellent presentation. And thanks for making it ad-free!

@jonnynelson5734 3 жыл бұрын

PS - This is a VERY good way to explain to teachers including professors at college. Great way for even professional to learn how to explain something a bit complicated in an easy way to average people and students. Exxcellent!

@rajir1876 3 жыл бұрын

Thanks prof Brian .very helpful.

@lokdeep 3 жыл бұрын

He is the best !! Many thanks Dr. Greene

@vishwanathm.n861 3 жыл бұрын

Excellent Lectures

@AbbStar1989 2 жыл бұрын

Nothing intelligent to say except these lectures are fantastic.

@yogibearra420 3 жыл бұрын

"Actually Officer, it was you who was speeding by as I was stationary along the highway"

@tiadiad 3 жыл бұрын

yogibearra 420 Actually, sir, I was the one who was stationary, and you, along with the Earth, were rotating the wheels of my vehicle at speeds above the speed limit. Here’s your ticket. Have a good day.

@jasongibbs6423 3 жыл бұрын

The reference frame defense! I love it!

@nozack5612 3 жыл бұрын

Unfortunately, you were moving wrt the highway. You would have to claim the highway and the roadside officer both buzzed by you and that you were stationary.

@Ken-wc7po 3 жыл бұрын

Great lesson.. Thanks for the great analogies and visual work....A+..👍

@Sunnydaysomewhere 3 жыл бұрын

Thanks for this Prof. Greene. I have learned so much from you. You share your knowledge with such generosity. Your passion for science is contagious.

@cronlos8852 Жыл бұрын

This is fantastic, but the shock I felt from him making Gracie get blown up by the grenade really sucked me in. This is a great way to keep humor in the physics discussion without breaking the flow of the video, just super!

@shahrukhkhalid5727 3 жыл бұрын

Amazing lecture 😀

@artdonovandesign Жыл бұрын

Proof Positive... that Prof. Green is the #1 Science Communicator in the field!

@joejones9520 2 жыл бұрын

I loved his work on on BH's 90210.

@geraldfishman5291 3 жыл бұрын

Excellent! - I've learned much about Relativity (Special and General), because his examples are so clear and understandable. I have a PhD in Space Science (Rice Univ. 1969). His (non-technical) explanations of Relativity are easy to follow and terrific! - Thanks, Brian (Wikipedia: Gerald J. Fishman)

@williamwalker39 5 ай бұрын

Except he is teaching something that is completely wrong. See the post at the top of the comments.

@redredwine1277 3 жыл бұрын

I enjoyed watching, very informative, thanks for sharing❤️ Merry Christmas 🎄and Happy New Year

@davissae Жыл бұрын

Relativity: Lectures by Dr. Greene pass faster than other professors.

@howrealityworks2997 3 жыл бұрын

Thankyou so much for combining whole course in one video. Our favourite Special Relativity Course😍

@dheerajrajeevan4867 Жыл бұрын

The fact that we are aware of our own shortcomings in our thought process, the reality that we know only a small fragment of what's out there is beyond incredible and really shows just how far humans have come. Greene is an incredible presenter, I could probably listen to him all day!

@hadjesti 3 жыл бұрын

Thanks ، excellent, Any Idea where the math version is?

@naturemc2 3 жыл бұрын

So kind for your time. 🙂

@webnet7024 3 жыл бұрын

Awesome job breaking things down!

@mariespencer5628 3 жыл бұрын

Dr. Greene Absolutely amazing course. Connection between time, space, mass, energy and speed of light is very clear. Many thanks. Vijay

@sherlockholmeslives.1605 3 жыл бұрын

"That is the essence of science: ask an impertinent question, and you are on your way to a pertinent answer." From Chapter 4 'The Hidden Structure' From 'The Ascent of Man' ( 1973 ) J. Bronowski ( 1908 - 1974 )

@lateralus46n2777 3 жыл бұрын

Amazing how Einstein knew everything he did. We are still proving his theory's to be true to this day as our technology and brains catch up to him.

@johnlawrence2757 3 жыл бұрын

Well: we aren’t, are we???

@reessoft9416 3 жыл бұрын

@@johnlawrence2757 Yes we are - gravitational waves, for instance, and GPS. Even his "biggest blunder" - the cosmological constant - may explain dark energy.

@actuallyasriel 3 жыл бұрын

I needed to take a second at 1:28:42, because I felt like my mind had just turned itself inside out.

@timsexton 2 жыл бұрын

Thank you Professor Greene, for your time & energy spent n the production of this content. Conceptualizing & understanding these theories is made much easier to the layman on virtue of your efforts.

@Dicckalo Жыл бұрын

@lambchop1960 2 жыл бұрын

Love learning from Brian Greene. A pure joy. Wish I had him as a professor. Some people have the gift of teaching. I do not lol

@tilakpoudel7949 Жыл бұрын

In my life best lecture I have understood about space , time and Einstin theory

@ronwood7029 2 ай бұрын

He makes complex things simple and interesting

@eglisious 2 жыл бұрын

Hi! Great Lecture, Prof: and I am huge Fan! I am not physicist and having little confusion on light clock (CLOCK) example. You says Motion affects time, but in example it actually affects "clock". It would be great if you give a proper definition of Time, if time is depended on clock so what by just stopping a clock we are stopping time???

@phukfone8428 2 жыл бұрын

I Am with You, time is a human perception.

@rezonite 3 жыл бұрын

I love this guy, Brian Greene. Im glad hes still around.

@ariiuna1 3 жыл бұрын

Absolutely fascinating! I have a silly question about the light clock example. Does the result (slowing time) hold if the clock is moving towards (or away from) the observer? Just curious. I can't mentally picture what that would do!

@tylerjoseph3476 3 жыл бұрын

Just picture your perspective from another axis, in this case 'head on' regardless of it coming towards or away from you, it will essentially be zigzaging on another axis and from your perspective be moving up and down at the slower speed.

@ariiuna1 3 жыл бұрын

@@tylerjoseph3476 Thank you so much! What I'm struggling with is that in the simple light clock example, time slows down because of the additional distance traveled by light when you are an outside observer moving at a different speed. Yet, I don't see a difference in the distance traveled between an outside observer moving at a different speed when the light clock moves towards you and someone who moves with the clock. The double diagonals in the example disappear when light moves exactly toward you, so why does time slow down then? I know this is a simple didactic example, but to your point, it seems direction would also play a role in the speed of time. Wouldn't it? Thanks again!

@pwc1141 3 жыл бұрын

He never fails to impress !! Great lecture.

@jballenger9240 Жыл бұрын

Hope WSU and Prof Greene return.

@joshhartman1169 3 жыл бұрын

you cannot tell me “the relativity of simultaneity” isn’t a gorgeous phrase

@brianelliott9861 4 ай бұрын

Best example yet of time dilation etc.

@nozack5612 3 жыл бұрын

So in the light clock example, the 'moving clock' is perceived to be counting time/ticks slower than the stationary clock. But conversely, the other frame is just as valid so from the perspective of the observer with the 'moving clock', it is that clock which is operating normally and the 'stationary clock' is running slower by the same ratio: sqrt(1-v^2/c^2). Just another version of the twin paradox: which observer is actually aging more slowly?

@stoicaantonela6722 Жыл бұрын

Thank you for your courses...Talking about this wonderful period of the quantum revolution, we think of the great linear transformation..simplification through resonant systems...

@jadecoley 3 жыл бұрын

Brilliantly explained. Thank you so much. Shout out to George and Gracie Star Trek IV.

@junacebedo888 3 жыл бұрын

Star Trek spaceship has no seat belts

@papaclanc 3 жыл бұрын

Which of course was itself an homage to George and Gracie Burns.

@reddragon2335 3 жыл бұрын

*"Footballs and hand grenades, objects of everyday experience."* What?

@ryanm5578 3 жыл бұрын

"Footballs and hand grenades, objects of everyday experience."

@seymoronion8371 3 жыл бұрын

Haven't watched the video yet, but it was probably a joke.

@gsyamsri8122 3 жыл бұрын

Hand grenades are being used every days. Not by everyone, but they are used everyday still.

@richarddevenezia8186 3 жыл бұрын

Not likely to forget this aspect of the lecture, are we ?

@pietropipparolo4329 Жыл бұрын

Wot me worry! Alfred E. Newman

@dylantillerson1871 3 жыл бұрын

i fell asleep and i woke up and now im here

@Killer_Kovacs Ай бұрын

1:23:02 you could have used a circle with the origin at the radius for this. As each point moves away from above the origin, C is spread out

@robsapplianceplus6071 2 жыл бұрын

So how about this? In your example of perspective where you are observing someone traveling near the speed of light, and the theory that time slows down for that observed person with respect to the observer...., what if there was a string or rope attached between the observer and the observed? Does the end of the string or rope attached to the observed age slower than the other end attached to the observer??

@aylaturkmen 3 жыл бұрын

Greene is not only a very well equipped scientist but a great story teller as well. Many thanks.

@markg7963 3 жыл бұрын

Dr. Greene, fascinating stuff, and your presentation spectacularly illustrates concepts I have struggled to understand. Thank you. Respectfully, however, I think you need to check a few of your facts. Specifically that the Star Trek Enterprise goes way faster than light, and doesn’t seem to have any relative time dilation issues relative to earth. Clearly some of your math then must be wrong?😉

@nabilj45 3 жыл бұрын

I have a dumb question. Lets say we move downward every time the light hits the bottom mirror but then stop moving just before the light hits the top mirror. We do this for a very long time. Does this mean we were both in motion and time moved twice as fast instead of slowing down? If we had a person next to us traveling the same distance but with constant speed, we would have covered the same distance but be twice as old.

@oldsachem Жыл бұрын

What are the possibilities for the topology of space-time in the universe?

@alexburke1899 2 жыл бұрын

You guys should consider pinning a link to this channel on the main WSF channel because the algorithm doesn’t seem to be suggesting this channel even when the subject is closely related. Both channels are great and I subscribed to both of them; or maybe there’s another channel I don’t know about:)..

@lanceflanagan 3 жыл бұрын

Respect where it's due... this was brilliant

@darkseid6412 3 жыл бұрын

NOW I UNDERSTAND WHY MY HIGHSCHOOL PHYSICS TEACHER KEPT STRESSING THAT SOMETHING WAS MEASURED AT REST IN EXAM QUESTIONS AND IN CLASS!!!

@chrispeters8208 3 жыл бұрын

really great presentation. thx

@peternyagawa2382 Жыл бұрын

Hi Brian, do we know the value of space around our Earth and what is it's unit measure?

@bipinprasad2 11 күн бұрын

He makes it appear so simple! But I am still confused, If two clocks are moving relative to each other. Are both of the clocks moving slow relative to the other? And when they meet back with each other what happens when they compare their times?

@oldsachem Жыл бұрын

According to this view of the metaphysics of the universe, does the concept of "free will" of the individual or anybody, singly or collectively, make sense?

@James92028 Жыл бұрын

Okay, question ---- you have a singular light source, but because space/time has different affects on the light at the POV of the observer on the platform vrs the observer on the train is there any measurable differences in the light being observed by each group? I'm asking if there are side effects, either temporary or long term, to the light? Or maybe the light causes changes to space/time?

@oliverpinelli3334 3 жыл бұрын

Amaaaaaazing....That´s a great explanation!!!!!

@trevormcvety7315 2 жыл бұрын

Great lecture Dr greene.

@frost1947 3 жыл бұрын

For a practical relevance isn't redundancy considered such as the planet's speed of rotation not applying in most considerations of an equation in speed configurations?

@henrus 10 ай бұрын

If speed and time are related (time slows to zero at the speed of light), does that mean time speeds up as speed decreases from c? If it does, is there a limit to how fast time can speed up?

@marknzuri9119 3 жыл бұрын

This is hands down the best lecture on Speed and Time

@TheGeeyes 3 жыл бұрын

thank you for sharing

@dominickdesanto7152 3 жыл бұрын

I have a kitten that pays no mind to whether any given video is playing, unless Brian Greene is speaking. Every time Brian Greene - and only Brian Greene - is on a screen, she walks over calmly, sits upright at attention and watches unwaveringly until another speaker comes on. I’m not sure of the science, but I can adequately confirm that it is pretty silly.

@paulmolitor5779 Жыл бұрын

Perception is very important. It feels like a year to get to have a vacation, yet it goes by in the blink of an eye. Furthermore a trip going to a new place takes so so much slow time, presence.Any trip home SEEMS faster, yet they are the same miles.

@oldsachem Жыл бұрын

As the mass increases with velocity, does the density of the mass also increase correspondingly?