Name: Brian Greene Explains That Whole General Relativity Thing
Uploaded: 2016-07-10T23:32:31.000Z
Duration: 7 min 55 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

MY NEXT GUEST IS A PROFESSOR OF PHYSICS AND MATHEMATICS AT

COLUMBIA UNIVERSITY AND COFOUNDER OF THE WORLD SCIENCE

>> Stephen: THANK YOU FOR BEING HERE, THANK YOU.

( CHEERS ) HOW DO YOU-- HOW DO YOU LIKE THE

>> OH, MAN, WAS THAT THE THE INAUGURAL RUN OF IT.

>> Stephen: THAT WAS THE FIRST TIME WE USED THE SCIENCE MOBILE.

YOU ARE HERE NOT ONLY BECAUSE YOU'RE A FASCINATING GUY TO TALK

TO-- THANK YOU FOR BEING AT MY LAST SHOW AT THE OLD GIG.

>> Stephen: BUT, ALSO, THIS IS THE 100th ANNIVERSARY, THIS

MONTH, OF EINSTEIN PRESENTING HIS GENERAL THEORY OF

>> SO WE DID NOT UNDERSTAND HOW THE FORCE OF GRAVITY WORKED

BEFORE EINSTEIN GAVE US THE GENERAL THEORY.

>> Stephen: DID NEWTON TEACH US THAT GRAVITY COMES FROM

( LAUGHTER ) THAT'S WHAT YOU WOULD THINK.

BUT ACTUALLY, WHAT NEWTON GAVE US IS A FORMULA THAT TELLS US

THE STRENGTH OF GRAVITY, BUT HE NEVER TOLD US HOW GRAVITY

IN FACT IN HIS OWN WRITING HE SAID THAT IT WAS A CRITICAL

QUESTION THAT NEEDED TO BE ADDRESSED BUT HE SAID, "I WILL

LEAVE IT TO THE CONSIDERATION OF THE READER."

>> Stephen: SO THEN EINSTEIN READ THAT AND SAID, "I GOT THIS

>> Stephen: STAND BACK, GUYS, ALBY IS HERE.

SO WHEN DOES SPECIAL RELATIVITY COME OUT?

>> Stephen: WHAT IS WHAT YOU CALL ANAS MIRABULOUS.

>> RELATIVITY IS THE MOST FAMOUS WHERE HE REDEFINED OUR

>> IT WAS AN AFTERTHOUGHT OF THE SPECIAL THEORY OF RELATIVITY.

>> HE PUBLISHED SPECIAL RELATIVITY AND IN SEPTEMBER HE

HAS A LITTLE EXTRA IDEA, WHICH IS E. EQUALS MC SQUARED.

AND HAS HE GOT ANY HITS IN BETWEEN THOSE TWO?

>> HE PUBLISHED ENORMOUS NUMBERS OF PAPERS BUT HIS REAL FOCUS,

THE PASSION OF HIS LIFE'S WORK, WAS TO FIGURE OUT GRAVITY.

>> Stephen: AND HOW DID-- HOW DID IT COME TO HIM THAT-- HOW

>> WELL, YOU KNOW-- >> Stephen: I DON'T EVEN KNOW

HOW DOES THE SUN KEEP THE EARTH IN ORBIT?

AND HE'S THINKING ABOUT THIS, THINKING ABOUT THIS.

AND ONE DAY IN 1907, HE'S IN THE PATENT OFFICE IN SWITZERLAND

WHERE HE WORKED, AND HE HAD WHAT HE CALLED THE HAPPIEST THOUGHT

>> AND THE THOUGHT -- >> IS THAT SOMETHING THAT WE CAN

I DON'T KNOW ABOUT YOUR HAPPIEST THOUGHT, BUT HIS WE WITH TALK

SO HE IMAGINES A MAN FALLING FROM THE ROOF OF A HOUSE.

>> AND HE REALIZES THAT THAT MAN WOULD NOT FEEL HIS OWN WEIGHT.

AND THE SCALE'S READING WOULD FALL TO ZERO BECAUSE HE'S NO

>> Stephen: I UNDERSTAND THERE'S AN EXPERIMENT TO

Subtitles ListPlay Video

Brian Greene Explains That Whole General Relativity Thing

time

general

theory

science