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Homework:
Einstein realizes his thoughts on gravity might explain Mercury’s orbit in ways that Newton’s law could not. Is Newton wrong? Einstein says maybe it’s my theory of gravity exist simply enough to explain all the experimental data. He calculated painfully the orbit of mercury, and there was a mere perfect match. His equations on the notepad match the motion of heavenly bodies in outer space. He has heart palpitations and he suddenly realizes oh my god, the theory is correct. And he’s so filled with joy that he couldn’t make his brain focus. For Einstein that’s a big deal.
He finally get the equations right, just as David Hilbert does, there’s a little bit of a dispute who got the equations first. There’s a lot of ranker at that moment, Einstein gets so hurt. Hilbert was very gracious, he says it’s Einstein’s theory, Einstein deserves the credit. He’s victorious. The theory is Einstein’s.
On November 25th 1915, a momentarily triumphant Einstein holds in his hands what he believes is the final equation for the general theory of relativity—his theory of gravity just in time for his presentation at the Prussian Academy. He goes to the academy and he speaks, nor for very long, it’s a short paper. With that, you have the general theory of relativity, which describes how space and time tell matter and energy where to go, matter and energy tell space and time how to look, utterly different view of what our universe is like.
Who knows how much applaud he got, nobody does, everyone suddenly found themselves confronted with the idea that the strange German Jew had overthrown Newton’s ideas of gravity. What exactly this meant now? No one was quite sure. There’s still no physical proof of it, no one understood Einstein, Einstein believes he’s finally got his theory right, but he knows that it won’t be accepted until he can prove it, and he can’t prove it without photographs of a total solar eclipse. For that, Einstein will have to wait again. 

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