Your Daily Equation #4: Relativity of Simultaneity

Episode 04 #YourDailyEquation: Today's equation shows that simultaneity is in the eye of the beholder. Two people who are moving relative to one another will not agree on what happens at the same time, and Brian Greene derives the time discrepancy between them. Through a simple story get the basic idea. And then follow Brian to put math underneath it all.

Even if your math is a bit rusty, join Brian Greene for brief and breezy discussions of pivotal equations and exciting stories of nature and numbers that will allow you to see the universe in a new way.

The World Science Festival (WSF) is an innovative multi-media organization that produces original live and digital content straddling the arenas of science, technology, the arts, media, performance and education. With the goal of radically transforming public perceptions of science, WSF creates world-class programming, both live on stage and televised, featuring inspired collaborations, outstanding talent and novel production techniques that bring scientific discovery, insight and perspective to a broad general audience.

[paulc]

Hi again Prof. Greene, I would just like to say that your story of the 2 Presidents on the train, is one of the best & easiest-to-understand explanations of Simultaneity I have heard. It is both simple and enlightening simultaneously ! Thanks again.

[eastlink]

Brian Greene, you’ve done as much for science as Albert himself. You inspire millions to follow suit with your ability to communicate complex topics in such an easy to understand and enticing fashion. Keep it up my dude, you may even inspire the next Einstein.

[briangreene]

Hi Everyone....Next episode starting shortly. I will also likely do a Q & A this week, live if bandwidth will allow. Send in your questions.

[penegraphlee]

Brian your smart. I listened to Lenny Leonard Susskin. But Len said he proved Hawkins's wrong about information can't be lost. But you're my favorite. You have a good calm pace. I listen to you because there is not enough information. But you teach as much as possible. I want to learn new thing's about the universe and I wish we could learn something spectacular and new everyday. With the tools we have limits us but I could only amagin 400 years from now.

[HimanshuSharma-oyss]

Dr.Brian you've got no idea how much this Biologist/Relativity enthusiast appreciates these equations of relativity which are immaculately explained by high school level Mathematics !

[srcochran]

Hey Brian, I just want to thank you for taking the time out of your day to create these videos. They deepen my understanding and nurture my curiosity. I have the utmost respect and appreciation for all the work you do. I hope to see you at World Science Festival one day!

[akosbakonyi]

These residents at the train station have good eyesight and reaction time!

[akosbakonyi]

Ideas: Schrödinger equation, Heisenberg uncertainty principle, Newton’s law of gravitation

[alanrosenblith]

I really appreciate you putting these out at a time when amateurs like myself have time to really dig into what you are saying. COVID-19 is terrible, but at least many of us are getting a chance to expand our scientific understanding thanks to you. Excellent work!

[PaolaBarrientos]

I admire professor Greene and salute him for making all his knowledge available and comprehensible. 🤗

[adamwilliams]

Dr. Green,

I wanted to thank you for your incredible explanations and taking the time to post these videos. This is the most access I have had to most of these enlightening equations and your teaching is second to none. I’m only on number 4 of your daily equation videos but I’m hooked. Thanks again.

[adamtokay]

I have a feeling that people say, wow cool and move on without contemplating the real life implications of the relativity of simultanity. this idea helped me deal with loss of loved ones and my own anxiety. Once you realize that the future and past are actually more real than the illusion of "now" that you experience, greef is much more manageable. As Einstein himself said to a widow, "It's not at all like your loved one was yanked out of existence by death. He is still there over a hill. You just can't see him"

[ngosamusic]

The way you make these concept so accessible to us is amazing. admirable even!
Thanks Prof Greene

[jsbllrt]

I'm enjoying this series very much. Thank you a lot! Greetings from Argentina!

[logankennedy]

As a mathematician, I would really like to see your perspective of the Riemann Zeta function. Thanks for the great videos by the way!

[wayneyadams]

16:24 Two additional points. (1) Typically, we replace c/v with the lower-case Greek letter beta. (2) the equation can also be written using gamma with gamma being equal to 1/sqrt(1 - beta^2) so we would have gamma squared.

[tonib]

Thankyou Brian for taking the time to share and care.Tony.x

[Homerwt]

I love these
They are keeping me sane in this quarantine situation we live in
Thanks !

[rebeccagyamfi-koranteng]

This video was very insightful. Good job!

[mohammedomeralamry]

i did admire Einstein's work and i consider him a pure genius, with this course, this admiration is getting higher and higher.