Thread: What is energy?
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A.T.
#4
Mar5-12, 11:08 AM
P: 4,078
What is energy?

Quote Quote by GravitatisVis View Post
Is it more of a bookeeping device for ultimately calculating the trajectory of the particle?
Yes, energy is just a numerical value, which happens to be conserved. And that makes it useful for calculating stuff. Feynman on energy:
http://www.phy.davidson.edu/fachome/...0/Feynman.html