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 Nov 10 awarded Popular Question Feb 5 awarded Popular Question Nov 21 awarded Popular Question Aug 17 awarded Nice Question Jul 2 awarded Curious Jul 2 awarded Notable Question Oct 26 comment Why is general relativity only formulated in continuum terms? Poisson's equation related to continuous mass distribution. The version that related to discrete mass distribution is simply one that defines the potential field as the sum of potential fields $-mG/r$ generated by each discrete point particle. What is the GR equivalent? Oct 25 comment Why is general relativity only formulated in continuum terms? I don't understand. In Newtonian Mechanics, space (and time) is continuous, but yet particles are discrete beings and we can formulate the theory as it applies to them. Oct 24 awarded Yearling Oct 24 asked Why is general relativity only formulated in continuum terms? Oct 12 comment Equivalences and derivations in Newtonian/Classical Mechanics Perhaps you can expand on that in your answer (with a short proof or a source)? Thanks! Oct 12 accepted Equivalences and derivations in Newtonian/Classical Mechanics Oct 12 comment Equivalences and derivations in Newtonian/Classical Mechanics So, what about the other way around? How does one show if the Second and Third laws a consequence of the conservation laws? Oct 12 awarded Commentator Oct 12 comment Equivalences and derivations in Newtonian/Classical Mechanics I saw this in: proofwiki.org/wiki/Conservation_of_Angular_Momentum Oct 12 comment Equivalences and derivations in Newtonian/Classical Mechanics Thanks. I thought conservation of momentum is a derivation of the second law (which just state the sum of all momenta doesn't change), and that conservation of angular momentum is a consequence of the third law (e.g. the proof in wikiproof). Oct 12 asked Equivalences and derivations in Newtonian/Classical Mechanics May 28 awarded Benefactor May 28 comment Symmetry of the $3\times 3$ Cauchy Stress Tensor I'll try. Also see the clarification to my question, if you haven't already. May 28 awarded Editor