WSU: Space, Time, and Einstein with Brian Greene

I wanna confess something, Brian greene's youtube content helped me get out of depression, honestly

Best delivery of a time dilation explanation ever.
Couldn’t leave til the video finished, totally glued.
Awesome Dr Greene. Awesome and inspiring.

Greene as a teacher to a layman like me is breathtaking, phenomenal and rare to encounter. Almost if not entirely one of a kind. I say entirely because this gifted teacher just gave a lecture on a difficult subject to understand to a non-physicist and n0n-mathematician just like me: the conceptualization of Special Relativity. Nobody in my book has explained Special Reavity and what it means in practical terms the way Green has. Outstanding!!!!!!!!!!!!

The first book that ever properly made sense to me and got me hooked onto Physics is The Fabric of the Cosmos! Thank you Dr.Brian Greene. 😊

Isn't that a miracle that we can watch this incredible lecture by world's leasing physicists for free at any moment in spacetime ! We are so lucky !

Every night i go to sleep watching youtube, doesnt matter what im watching, i will wake up in the middle of the night to this video

Thank you for sharing this. Brian Greene is just the best science communicator. Sometimes im so thankful for KRplus.

Only If I had more teachers like this.
Your teachings are excellent.
I have never ever had a physics class like this.
My professors would always bully me with students.

Can you imagine what we could accomplish if we all had teachers like Brian Greene?

I love falling to sleep with these ideas....its very relaxing.

You have just witnessed a lecture on constant velocity motion and special reatuvity that will never be surpassed! Professor Brian Green has got, to be, the most brilliant and erudite educator on all aspects of physics, the universe, cosmos and quantum physics bar none, His enthusiasm, clarity and techniques of getting his message across is absolutey phenomenal! Thank heavens for teachers in his vain. They are very few and extremely far between... We love ya Brian!!!

The visuals are incredible! I can listen to Brian Greene for hours but these visuals are really next level 👏

Give Albert Einstein the respect and credit he deserves for piecing all the concepts together, if, he hadnt thought of it himself.

I’m starting my junior year as a physics major this semester, and while I’m used to seeing all these crazy equations that we have to try and solve like Schrodingers, Lorentz Transformations, etc, it’s nice to be able to clearly and simply understand what exactly I’m trying to solve rather than being fed all these letters and numbers and being expected to be a master of special relativity or quantum mechanics and the like. Thanks Brian!

I’ll be rewatching this for a while. Great lecture, I always enjoy listening to Brian.

The more I learn the more I realize how much I don’t know. I have three degrees and bunches of letters following my name, yet I know so little. Thank you Dr Brian…you are the best. I’m continuing to learn.

I’ve been learning stochastic and differential calculus for financial quantitative analysis and took a break to watch this video. I completely forgot myself for those two and a half hours.... I’d always heard of these equations and watched Interstellar several times but never really understood the concept with a high degree of comprehension until now. BRAVO man 👏 this was extremely spot on, and I can’t believe anyone would dislike the video. I never though calculus would come in handy in the real world until two situations in my life: 1-the decision to become a quant, and 2- my new found obsession with time travel and time dilation in general. To quote Family Guy, “why are we not funding this?!”

“When kids look up to great scientists the way they do to great musicians and actors, civilization will jump to the next level” ~ Brian Greene

I'm watching from South Africa, Durban. I am enjoying your lecture, I'm going to actively seek more of your work as you have a layman's way of explaining rather complex scientific concepts

Amazing I think I understand time dilation on high level now. Thanks, Mr Greene. What a treat.

What a gift Brian Greene has. He can explain this kind of thing in ways that mortals like me can perfectly understand ! Thank you Brian !

Thanks u for this.
One of the best videos on internet... I came here thinking let's watch 10 minutes, you held me captive throughout the session.. I just hope time ticks slower on ur 🕒 and u get lot of time to teach many people...

This is amazing. I am not even from USA or have any school in physics and I understand everything. Incredible speaker

Hi. Prof. Brian Greene. In the beginning, recently, I watch your program by chance. But now, I am hooked and become your staunch follower. Your lectures are very interesting and enjoyable even for someone who does not have any background in physics or cosmology. I feel you are giving lectures on cosmology like reading a poem. I love it, sir. I am watching from Thailand.

I never went to high school. Theoretical physics, subtopics particals,, quantum theories attract my imagination n I'm so grateful these videos explain so much of the questions I've been asking myself for years.

Damn I love Brian Greene. I could listen to him talk about .. I dunno... potatoes for an hour and be totally into it

Thank you Brian for giving me hope that maybe I’ll understand this one day. I’ll listen to this another dozen times and get back to you!!

I have read, I believe, every book that Dr. Greene has written. There is simply on one on the planet who can explain complex subject matter in a manner that even I can understand. Thank you, Professor Greene, for allowing me to see and appreciate the wonderful universe that we all inhabit.

This man is just awesome...
When he teaches then space and time comes to a stop

Amazing. The effort that went into this production to convey science to the public, does not go unappreciated. Personally it extends past my understanding, but it fills gaps in knowledge that would have previously gone barren. Anytime Brian Greene or Sean Carroll or Dr. Tyson or anybody connected to radio astronomy, physics, Astro-physics, JPL, Nasa, Space telescopes, is in the Title,,, I'm watching it.

Amazing lesson and awesome teacher. I felt like I finally have someone who knows the answers to my questions before stressing a thorough investigation on my own paths. I still have so many questions on this topic, but I know now that someone like Brian Greene can just keep answering them so helpfully and usefully.

At 80 years old, I wish that I had my younger brain again when I watched this tutorial by Professor Greene. .

Excellent lecture by Brian Greene!
I love relativity and now we have this precious video forever to watch over and over again. Thank you Brian!

Thank you Brian Greene. Thank you. That was so eloquently explained and in such an entertaining style that, at least IMHO, you leapfrogged past Sean Carroll, in terms of communicating your craft to we others (less gifted), and in doing so you help to enlighten us all both now and, hopefully, our prodigy sometime in the relative future -- either through our sharing of what we just learned or via osmosis through our DNA to theirs perhaps. And think of how much better we inhabitants of this planet might be if we all could see it, and everything else around us, through Brian Greene's eyes. Not necessarily his perspective mind you (pardon the pun) but through his eyes. I do have issues with his perspective and interpretations at times but there is no denying his incredible ability to pass-on to us these wonderous things such as this which is shared in the lecture above. Again, thank you Brian Greene. Poles and barns .... lol. Incredible.

Being a science student and a teacher (in a different field) can vouch on the beauty of your arrangement of thoughts and delivery of the subject. I never grasped the theory of relativity as clearly as i did today. Imagine my concentration to have realised after 1:30 minutes of continuous watching.
Good job!

Brian Green is by far the best public speaker on KRplus. Flawless as a salt crystal.

Dear Processor Brain Greene,
I love physics and I'm sure there are at least 1 lakhs students like me who love physics too but the way our teachers teach us is rubbish...they let us to see the beauty of marks, jobs, career etc.
For the love of physics, i request you to please teach a full coarse on Electromagnetism and Quantum physics.
It would take like an year of daily class to complete but please sir😭.
I love you...Live Long

If I’d had a science teacher like Brian Greene I’d have a PhD in physics

Profesor Green Thank you for the photon clock example. Been wondering for 50 years weather time dilation was wrong or just all the examples were wrong. You provided all the math in so simple a manner that I could understand clearly that I had missed nothing as you proved clearly the problem. The light photon in each clock moved the exact same distance. Since it takes the exact same amount of time for both photons to move the exact same distance there was no time dilation only one clock was not up to the conditions it was placed into, so it reported 1/5 the time but your math proved that the clock was not reporting an accurate measure. Both photons traveled the exact same distance :)
Thank you so much for your awesome example and for doing the math in so clear and simple manner. Following up by showing this simple ratio was in fact in line with the fancy math let's me finally put this issue to rest. Clocks may fail but time is as consistent as photons are.

Thank you Brian Greene, a gifted teacher!

Brian is such a great teacher and speaker.
Great video. Thank you.

I'm smarter today because of people like Brian Greene. Thank you sir for your teachings.

At 3:16 and he is such a great teacher. The key is to learn slow and in detail and with basics cleared / strong basics.

I am now an addict of his lecture, professor greene is a legend, who made physics fun and easy..

The difference between a poor student and a brilliant one is the teacher. Brian is not only a brilliant student, he's an excellent lecturer.

You have a gift of eloquence and intelligence; thank you so much for all of this effort and time! Have you always been brilliant at communicating, or have you learnt this (if yes, how)?

I wish we were taught like this in college :(
We were mostly cramming things without actually understanding what's going on. This video is totally amazing!

Once again thanks for KRplus and its content creators...access to videos like this are often more instructive than classroom college lectures on the same subject. Yes, I could do with less of Professor Greene jumping around on a stage, but that seems a small price to pay. No, this does not replace the in person experience of going to an institution of higher learning but what a boon to the rest of us who are no longer in school.

Thanks for the great video, loved every minute of it. Brian Greene is a great teacher.

Brian, really has an amazing gift at explaining things.

The more I watch these videos and ask these questions, the more I realize nobody really knows why. I've been beginning to accept the fact that it is just true and can be measured consistently. These are just properties of reality. I spent my entire lifetime trying to wrap my head around this stuff but I think today I finally get it. I can finally see forward and backward land.

What a wonderful lecture!!!
What a great communicator Brian Greene is.... I felt like I had been to Richard Feinman's baby group!!!
Thank you.....

Sir, you are one of the few persons who actually make one love physics.
Thanks a lot sir.

Amazing presentation. Very clear and no um's or uh's. A true masterpiece.

Amazing information..excellent explanation..how calming..this is the lecture I search for beginning...love and respect 🙏 for every one who makes the beautiful video...thank you.

I love his use of graphics to make the complex understandable. Fascinating.

Brian, I'm speechless. For the first time in 30 years, I get it. This is the clearest account of these ideas on the internet.

I remember reading the train analogy in The Elegant Universe and having to draw it out myself, I'm so happy to see this amazing visualization!

There is something so soothing about your teaching - its easy to follow and you have a way of keeping our attention

this is such a great speech/choreography with digital animations. this is the live version of a youtube video! OMG!

Dr Greene thank you so much for taking the time to create and share these lectures! Please please more, my brain is hungry!

Thank you so much professor Greene. I love the way you explain thing

Dr Green and his lectures are simply amazing .Maneuverd through the different sections ensuring to cover presumably arising questions and visuals blend in precisely. Thank you Dr Green..

Amazing video, thank you so much WSU for putting this together for those of us who are less into the mathemathical side of it. Just one thing that I guess accidentally slipped in is the math for the Pole in the Barn instead of the regular explanation. I had to the switch to the 12 hour video for that one. Anyways, Brian Greene you are the best!

In the beginning of this video, my mind broke many times proportional to the tick tocks on the stationary light clock but progressively healed at the rate of the moving tick tock upon multiple viewings and that was awesome to build this foundation of knowledge , incredible instructor !

For young aspiring physicists like us, it is very essential for people like Dr.Brian Grene to inspire us and
Equally, from our side is essential to get inspired by them; to not only keep our in touch with our subject, but to keep the flame of curiosity burning inside too.... I'm deeply grateful for this sincere effort Sir.
I will do the same soon

the professor is embodiment of selfless giving to people by giving up so much of his time n knowledge. thankyou

thank you so much for this beautiful lecture.

Thank you for this amazing presentation. Looking forward to the next!

I do not think out of all lectures by Brian I have listened to he has eeeeeever muttered the words...
uh, or um.
expecting to hear those words from him is excruciating. Thank you Brian

18:06 mind blown. I’ve never made the connection in that context before.

The difference between a poor student and a brilliant one is the teacher. Brian was not only a brilliant student, he's an excellent lecturer.

Wonderful presentation, I've always enjoyed Brian's lectures and writing!

A topic that I really shouldn't understand now makes sense. Thank you for sharing your knowledge. Now I want to keep learning more.

It may be sophomoric of me, but what I love most about Brian‘s examples and in particular this seminar is that he uses George and Gracie in his examples. And of course that would be George Burns and Gracie Allen. I encourage anyone who doesn’t know who they are to look them up on KRplus and watch a few of their TV shows Back in the 30s 40s and 50s. Gracie Allen was a genius in her own right although she played exactly the opposite of that. But I’m so happy that he remembers them fondly enough to use them in his examples. God bless George Burns and Gracie Allen. Peace.

Brian Greene is such a great educator!

Dr, Brian Green. You are the best teacher I ever had the pleasure to learn from. I am old but there were things I had trouble grasping. An now it is clear to me. I watch all I can, you are the only one who describes and shows results. Thank you. Ray Parker

Thank you for this. Really interesting. I never learned Math at school - stopped at Arithmetic, so really appreciated the great examples.

I like the way you explain the science, Brian Greene.

briliant lecture. important knowledge, widely attainable, easy to understand. except for the log part, i was a little stumped. (it was 3am )

It's one of the greatest lectures that I've seen in regard to this topic. Thank you.

Thank You, Sir. You just helped me a lot, by providing many useful words.

Fascinating and inspiring to watch him lecture. The dictation he presents is profoundly admirable.

Brian Green inspired my love and passion for science.

Thankyou so much sir.....our favourite special relativity course.

Congratulations to all of you who understood this explanation. The bouncing beam in the light clock broke my mind.

1:42:10 - strong associations with another tunnel , a link to QM - for a very brief moment i saw a connection & then it was gone
( should have left out the sub standard derivation of e = mc² though - multiply the right side by any scalar would keep the units ok , even 0 , and the derivation itself is actually quite straightforward )

From my perspective, the most amazing aspect of this lecture is that if forces you to rethink your entire concept of reality. At 74, it’s not so easy.

One of the best physics videos I’ve seen...so informative! I keep watching this repeatedly. The technology of your teaching aids really helps. Thank you, Sir!

I have enjoyed Brian Greene for years . Thanks you tube.

The shortening of length as it passes by the observer is analogous to the Doppler effect, except in this case it’s the wavelength of light as opposed to sound.
I understand now your explanation! Thank you

Excellent lesson, thank you so much.

Brother, I've been following you for 16 yrs. This is by far your most susinct and penetrating lecture. Bravo!!! Thank you.

I watch a lot of the WSF videos, and astronomy videos in general. As an amateur photographer, I love playing around with motion blur flash photography. Using the front curtain/rear curtain techniques to create motion blur (snail trails) I learned about how to get the different results. First off, photography lingo - Front curtain means the flash fires first, followed by a long exposure. Rear curtain means the long exposure is first, and the flash fires at the end. I chose to do this at night with cars on the street, headlights and taillights on, to learn the principles.
So, how did I experiment with these concepts? First, I tried both techniques as I shot the car approaching me. Then, I repeated the process as the car drove away. All scenarios operate on a left to right basis, for continuity.
Approaching, front curtain, pointing at headlights - The flash fires first, capturing the car in a sharp image at frame left, followed by a snail trail on the right. This gives the appearance that the car is racing backwards.
Approaching, rear curtain, again pointing at headlights - The long exposure comes first, then the flash fires at the end. This gives a sharp image at the far right, with the snail trail behind it, so the car appears to be racing forwards.
With the car retreating, flash set to front curtain, pointing at taillights - This gives a sharp image of the car and taillights at far left, flash firing first, and a snail trail to the right, so a motion blur of the rear side of the car appearing to be speeding backwards.
With the car retreating, but using flash rear curtain, pointing at taillights - This gives a long exposure snail trail of the car first on the left, followed by a sharp shot at the end on the right when the flash fires. This gives the illusion of the car speeding forwards, away.
Just like George and Grace, the effect was different depending on perspective, and which measurement you took first. Shooting from the front depended on whether the flash shot at the start or the end, and the same for shooting from the rear. Firing the flash at start or end also affected the final outcome.
Now here I am watching these videos and learning about clock delay, and the Team Barn / Team Pole explanation is just a much more advanced explanation of the principles I discovered through experimenting with my camera.
So, to all the people who create the content on this channel - Thank you! I watch it almost every day, and even play it while I sleep, just to have the audio reinforcing it all. I can't do the math you can, but it's nice to watch this and see that the same principles I learned about timing and perspective with my camera also follow the same logic. That gives me the confidence to follow ideas like this and know that I am on the right track.

I fall asleep to this all the time - I wish my brain would just absorb all this awesome info when I sleep but alas I still struggle to comprehend all of it! But Greene is such a good teacher that I am finally getting a lot of it!

man i wish i'd thought about looking up stuff like this on youtube like 5 years ago before i dropped out of physics... the way he explains these stuff makes it easy to understand as if he's talking about 2+2=4, only here 2+2 doesn't always equals 4, it depends on your perspective.

That muon explanation of time dilation nailed it for me, thank you.

Best 2 hours! loved this, great teacher!!!!

Simply put, the best explanation of timespace. Now I can pretend that I know a little about timespace

🎯Physics perfectly explained the "motion" of Rock&Roll🤘😎📈 Thanks for confirming that ! ✌