Feynman's Derivation: Find Universal Law of Gravitation

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Feynman did not derive the Universal Law of Gravitation; instead, he started with Newton's Law and used geometrical arguments to derive Kepler's Laws. Some discussions reference a proof attributed to Feynman, but it is not widely available online. The book "Feynman's Lost Lecture" contains this material along with a recording of the lecture. Those interested in Feynman's approach may need to seek out this book for the complete context. Overall, Feynman's contributions to gravitational theory are often misattributed or misunderstood.
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Does anyone know where I can find Feynman's derivation of the Universal Law of Gravitation?
 
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You can't. Feynman never derived the "Universal Law of Gravitation".
 
HallsofIvy said:
You can't. Feynman never derived the "Universal Law of Gravitation".

Really? I heard that he did without using calculus, and I am interested...

"Richard Feynman, Nobel-prize winning maverick physicist, rederived such a proof (as have some distinguished predecessors."

...taken from http://www-spof.gsfc.nasa.gov/stargaze/Sgravity.htm

I was just wondering if there was a resource online for this (rather than going out and getting the book).
 
apmcavoy said:
Does anyone know where I can find Feynman's derivation of the Universal Law of Gravitation?
Feynman started with Newton's Law of Gravity and derived Kepler's Laws, using his own geometrical arguments based on properties of ellipses. I don't know where you can find it online.
 
Doc Al said:
Feynman started with Newton's Law of Gravity and derived Kepler's Laws, using his own geometrical arguments based on properties of ellipses. I don't know where you can find it online.
That is correct. The book is Feynman's Lost Lecture and is sold with a CD of the actual recording of the lecture by Feynman.

AM
 
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