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Everything posted by pmb

  1. There are a lot of assertions in your post. I'll approach this by addressing them one by one. Who are these "people" you are refering to? What do they mean by "gravity is not a force"? What do you mean when you use the phrase "natural motion"? I don't see a problem with that? This is where the idea of a field came into use in physics. Regarding your example, a similar thing happens when dropping a charged body in an electromagnetid field. The way these phenomena are described in modern physics is that as follows: Source generates field at R = R(x,y,z) -> field acts on body which i
  2. Wow! It's as though this this thread was put together by a chain saw!! First off the E in the expression E = mc^2 applies to particles and has the value E = Rest Energy + Kinetic Energy. The expression E = mc^2 appeared in the physics literature before Einstein put it there. But this is not a thread about history so I won't get into it but point you to the physics literature on this point. See the American Journal of Physics Did Einstein really discover "E = mc2"?, W.L. Fadner, Am. J. Phys. 56(2), February 1988 JP wrote That's not true. This debate appears in the peer reviewed ph
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