I’m a retired physics teacher. I used to use many of Brian’s examples from “The Elegant Universe” and “Fabric of the Cosmos” to explain Special and General Relativity. Thanks Brian!

Thank you Mr Brian Greene, this lecture means the world to me. I'm an undergrad physics student and an older one now, and still an incomplete one. But I did get a solid foundation...from a certain few inspiring excellent professors... However several years ago having long talks with an astute physicist friend of mine about physics got me started again. I didn't get to a Relativity class in my first go round ,-- set of courses completed .. I believe I can learn on my own because if the great quality of lessons online....yours is one such source for me.. Didn't Ralph Townes learn a lot of physics on his own ,( with some guidance from a professor at Columbia?)..before going on to invent the MASER?? ID rather learn physics than anything in the world, had a bit of a *rough start but I believe I can do this so thanks so very much !

These talks are phenomenally lucid. I wish the Great Courses company would take notice and offer to provide a further platform for Prof. Greene´s brilliant exposition of broad swaths of modern physics. Perhaps they already have.

I must thank you Brian. I have known of your work for many years but only recently come across Your Daily Equation. It has forced me to re-engage my recently 78 year old brain and it delights me! I will follow YDE from now on.

Thank you KZfaq for recommending this channel. Informative, direct, and excellent explanation.

Thank you once again. I look forward to these daily equation sessions.

Thank you for explaining the great ideas so clearly and fluently. I fall in love with science from your performances.

This is so awesome. Thank you for doing these videos. I have been meaning to ask for GR for a while. But I actually had a special request about it. Not just the equation, but also the QM equation and where the two don't relate (if that even makes sense). Thank you again for this.

I thought I ran out of time today, then I remembered it's all relative. It's always on time.

Hi Prof. Greene, Greetings from West Wales. Hope you are keeping well. Thanks for another great episode of Your Daily Equation. Looking forward to more GR. Best wishes & Stay Safe. Paul C.

This is the first time I have seen address to the obvious shortcomings of the rubber sheet analogy.

Thank you from Israel. I am a yoga teacher, don't know much science yet read some science books here and there. This video helped me understand some general relativity. Thank you.

These series are amazing!!! Please consider making it a weekly thing after the lockdown ends.

Could you give a lesson about tensors?

I am so thankful that there is a video like this available , now I understand more on the reasoning behind Einstein's thoughts.

Thank you Brian it was beautiful!! I am glad I discovered this site!!

Waiting patiently for a course in Einstein's Theory of General Relativity in World Science U.

Awesome professor Brian! .. had never heard about the example with the circular motion! Great! ... This series "Your daily equation" is the best thing that has happened to us, learning physics from one giant of our generation!! Thanks a lot professor!!

Thanks a lot for this wonderful explanation. It is such a joy to listen in to Brian Green. And it is all for free.:-)

@16:01 Thankyou! Seeing this space-warp example settled a question that has been with me for some time.

Beautiful explanations and teaching techniques. May you be blessed with an ocean of knowledge!

This is a fabulous video! I cannot wait until the unpacking of the GR equation!!! Thank you.🙏

Thank you professor Brian!

Thank you so much. You are the best talker to give me an understanding about the general theory of relativity. Your talk makes me have an interest in physics. I wish i could have a good teacher like you about 50 years ago. I really enjoyed the happiness of getting a knowledge. Thank you again.

Professor Greene explains things so clearly. Just brilliant!

I love the new location! In this period it feels good to look out of some different window...

A beautifully clear introduction to GR. Thank you ever so much Prof Greene. May these talks continue for a long time to come, I'm learning so much.

Hey Brian I just became aware of these ‘daily equations’ which are most informative and well explained, especially for a somewhat dull tool in the shed like me. I watched this episode first then went back to E=mc^2. I’m glad that at some point you figured out the split screen thingy 😄

Outstanding! Thank you.

Thanks to Brian Greene for this video 👍👍🙏🙏❤❤

Thank you Professor.

Wonderful lecture

thank you ... you are so charismatic ... its so great gift to teach us for free for those great ideas ... thank you

thank you so much for such a helpful information.

21:59 "or if you put yourself in the shoes of the bottle of water, whatever that means." i don't know why, but that made me laugh hysterically.

Thanks Brian. You are doing Great work.

THANK YOU PROFESSOR GREENE!

Loved it! Very explanatory and theoretical xx

I look forward to hearing more about the time piece which I had failed to fully appreciate.

Very nicely done - as usual!

This video is great. All the knowledge has been shared in a single video...

Finally someone who explains clearly a question noone answered me when I ask: if gravity is acceleration, why are we not now speeding at exponential times the speed of light? Because acceleration is also a change in curvature, not only a change of speed! Thank you professor Greene, these daily equations are just fantastic.

The 3-D animation of a space deformation by a massive object is great! ...😍 I've always wanted to see that in 3-D. Thank you! 💖

Thank you professor Greene for an excellent explanation.

Thank you for teaching us the basic. Although, you are very advanced. You have the patience to explain us the basis of these phenomena. Please go on. Thank you so much.

Truly amazing ! Thank you so much .

I was really waiting for this topic

Thank you

I'm Blessed, to listen straight from Greene 🖖🙏♥️

Eagerly waiting to learn Differential Geometry in upcoming episodes to understand the Einstein Field Equation.....Thank you so much Professor.

So good! Thank you.

These videos are amazing!

I enjoyed watching this post very much.

Great video on General Relativity

Really gives a feeling about the GTR, I cannot wait for the derivation and the tensor math. Thank you.

What a great explanation!

Now you've covered Einstein's equations for the photoelectric effect, and the special and general relativities. I'd like to see the equations that started it all, first where he calculated Avogadro's number, and then where he calculated the equations of Brownian motion and proved the existence of atoms/molecules.

For connecting acceleration and curvature, I always thought of it as visualising a displacement-time graph (or maybe a space-time diagram) A motion of uniform velocity would be a straight line; an accelerated motion would be a curved line.

Thank you, professor Greene! It's an art to simplify such complex concepts into courses like this. I really enjoyed it. 👏🙏

Breathtaking Class of the Einstein's General Relativity creativity of a Stunning Scientist/Physicist 🙏 I'm not a Scientist, just I love learning, from a Simple Human Being 🙏 Thank you for all you do!

12:22 Just brilliant. General Relativity was the most powerful mind exercise ever.

Thanks, I enjoyed it a lot.

ありがとう! Thank you

Good teaching style. Beginner level coverage

Any concept you explain comes clear as water, what a gift. 21:55 tho hahahaha

Thank u sir .. u cleared my one of the greatest doubts

Brain is just so clear...! Thanks!

Great video....3 cheers

Dr. Greene. May we learn about infinity and infinities? Thanks for your commitment to the series.

Hi, it would be helpful if you put everything in a playlist covering all of a certain topic such as general relativity.

Thank you, Prof. Greene. Outstanding how you can take these concepts and explain them so clearly and make them entertaining. Question: Is the same gravitational mechanism that causes Earth to orbit the sun apply to an object/person on the Earth (feeling the force of gravity)?

He is always, so full of optimism

Now we need to explain "Dark Matter" and "Dark Energy" in relation to General Relativity.

fantastic!

Thebottle of water with the hole in it the dropped was a great example of the equivalence principle you used.

Great 🙏thanks sir 🙂☀️

Thank you please keep going on deconstructing the field equations and how Schwarzshild derived his exact solution. Do you find the light beam through an accelerating elevator helpful in explaining curvature of spacetime?

From the legend, himself. Awesome stuff.

Great view, reminds of Scotland

Just saw World Science Festival 1995 talking about general Theory of Relativity.

Another great presentation Brian, many thanks! Perhaps like a lot of people, I've never felt entirely comfortable with the "rubber sheet" analogy - but coming across the fairground ride/Lorentzian contraction of circumferential elements example for the first time, was - well - somehow much more satisfying 👍. PS Also very impressed by the falling leaky bottle demo!

Love the intro 💕

Beautiful

amazing

love you professor, i wish i can meet up with you someday

Sir : I am at loss to find words to thank you and pay my gratitude :as siting so far away: I learnt a lot from you: as Einstein’s Special Theory of Relativity and General Theory of Relativity: oooh wow:without your help it’s pretty hard almost impossible to understand:I follow your Stage lectures as well: Your way if explanation presentation communication to make understand guys like me: and of course a lot / millions like me across the globe: that’s why I repeat that I don’t have words can’t find them at loss: how to thank you and to express my gratitude: that’s the beauty of science Legends like you only have the sensitivity to pass on your knowledge for nothing no self interest whatsoever : deserved our full appreciation: Keep up the good work beyond boundaries..!!🙏🙏

At the expense of great mathematical complexity, GR has pushed the "what's the mechanism" question one step further down the road. It enables calculation of the curvature of space-time by mass-energy and the motion of things in that curved space-time (and many other wonderful results), but it provides no physical mechanism by which the curvature of space-time is produced. The problem appears to be that we do not yet really understand the structure and composition of space-time. Is space-time discretized at the Planck scale? Does it consist of a grid of nodal points connected by elastic "strings" of Planck Length? Are there short range forces that would bind nodes (or string ends) if they were brought in proximity by local folding and/or rotation of the Planck grid? Does mass-energy warp the geometry of space-time because mass-energy IS distorted space-time? Whatever the answers to these questions may be, we would still have to explain the mechanism by which those forces are produced. The rabbit hole of physics appears infinitely deep.

Please do a video on Electrodynamics

I love the 3d depiction because thats how ive always pictured it. Whats nice about that is you can see a 2D plain of space time being bent in all directions. Above, below, beside, behind and in front of the object, and how when the object is further away the fabric bends less. So instead of Newtons' theory having instant influence from one object to another the object would instead have a instant influence on space time. Pretty cool

Is the approach of sticking together different LISes an equivalent reasoning for linking curvature with gravity to the tornado ride you mentioned, or is it conceptually little bit different?

Love to see him on discovery channel

einstein's painter :: newton's apple

Can anyone explain why it takes more rulers to measure the inside? I don't understand that.

May God bless you sir

Iv got a very long question and was really hoping you can help. We always mention these amazing minds throughout history like Newton Maxwell Einstein etc that where leaps and bounds ahead of everyone and push our knowledge further. My question has a few questions in it. Like, when do you think the next big mind will push use forward again? Do you think they already exist but will only find out in the future?maybe we won't see another mind jump us forward again as maybe there are no new big physics questions left? or we have to wait for technology to catch up to prove these theory's correct? Or maybe we now have lots of these magnificent brains in our current mix and it's hard for someone to stand out? Do you think maybe the next Einstein will be in a diffrent filled like technology that pushed are knowledge further? I would love you to do a piece on this and have your thoughts. Thank you

hey that looks just like the place in danby where the plateks used to live back in the 90s!

Prof.Brian, @ 28.40 min. you said circumference is πR. It should be 2πR.

Thanks for the great, clear explanation! The animation at 16:00 is how I'd been picturing "gravity" in my head (...and yes, with just a single object - more than one gets hard for me to imagine). It'd be really interesting to see something similar with two or three objects influencing each other (orbiting, passing by) in a "3D grid" rather than just a single object all by itself. Does anyone have a link to animations like that? :)

One quetion please! Since acceleration is relative.. is a free falling electron radiating or not? Thanks!

29:58 Right but the connection isn't of the same nature of that of the equivalency principal , where there's no test you can perform to tell you otherwise, (assuming you're not allowed to look out the windows of the space craft) how can being on the inside of a spinning ellipse or circle be acceleration , if you were in deep space and stopped the engine spinning the room, it would continue to spin forever assuming zero friction with the particles outside or the atmosphere inside keeping you alive right? When I think of acceleration and gravity y I think of the need to constantly add more energy to the system, you not just moving fast, your moving fast quicker than you were the previous second , Also is there a name for increasing acceleration. Like increasing speed is called acceleration what about increasing acceleration. Like perhaps a second ago your speed was increasing by 9 meters per second, evey second, but now it's increasing at 10 meters per second, per second. Accelerating acceleration. Can't you just follow that down an endless rabbit hole. Turtles all the way down type of thing ? I don't really know what I'm saying. What about the Earth is the Earth accelerating through the galactic medium or is it at a static velocity that is slowly decreasing, or does it go through periods of be acceleration due to gravitational interactions, and deceleration to the other gravitational interactions and friction within the galactic medium. ?