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| Tags: inertial, mass, rest |
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#12
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From: (Radi Khrapko)
Date: 8/21/2003 2:34 PM US Mountain Standard Time Message-id: And what about a definition of mass? I already gave it to you. Radi to Waite 201418 Dear Waite, I have read all you wrote, and I cut our texts to shorten our messages. Please, repeat your definition of mass. See- http://www.geocities.com/zcphysicsms/chap3.htm pay particular attention to the paragraphs immediately after equation 3.1.5 Radi to Waite 212140 You deceive. You do not know a definition of mass. The formula $$m^2c^2=\eta_{\mu\nu}P^\mu P^\nu\eqno(3.1.5)$$ is not able to determine mass of a body moving past us. You deceive. I just gave you the definition. The formula determines it just fine. Do you agree with the Wheeler definition: To find out the mass of a particle one must weight it! Or determine its gravitational pull? No, but I doubt that is precisely what he said. Wheeler wrote at the page 248 which you referred to: How do we find out the mass of a particle? - Weight it! Or determine its gravitational pull. I asked you, Do you agree with the Wheeler definition: To find out the mass of a particle one must weight it! Or determine its gravitational pull? That is not what he said. Its funny you first quote what he said and then you change what he said and ask if I agree with your changed version. I don't. I don't agree"with YOU" that one "must" choose one of those two methods. Nor do I agree with either of you that gravity "pulls" at all. I already explained that for gravitation alone F = 0 and A = 0 is the geodesic equation. So stop asking if I agree with it. I already told you why I do not. You have answered: No, but I doubt that is precisely what he said. It is pathalogy! No its your deception. You quote what he said and then change what he said and ask if I agree with your changed version. And, please, explain what occurs when a constant force accelerates a body: is the accelerate constant? is the velocity constant? When a constant force F acts on a body the acceleration A is constant, but due to time dilation as relating the time differentials of the two the coordinate acceleration "a" is not. Why in the world would you ask if the velocity is constant? Of course not. Yours terms are bad. When your acceleration is constant not equal to zero, the velocity tends to speed of light and becomes constant. In light of how the time differentials in the two are different due to time dilation, how is that bad? As a foot note I should mention that though hypothetically if one had constant F that one would also have constant A, but that in fact one can not "really" even have constant F or A other than 0 at all. One normally considers instead the case where |F| and |A| are constant as I defined them in which case the resulting equations of motion are contained in the part of the Baez FAQ on relativistic rocketry and at my site. You do not understend the concept of inertia. No, you don't. You do not know that the electic field is a vector field. No its not. The electromagnetic field F^mu^nu is the vector field. E and B alone are not vectors. Your paradigm gives birth to mistakes. What mistakes? E.g. Wheele wrote: Rest mass of final system increases in an inelastic encounter (p.121 of Spacetime Physics, 1966). You already quoted that and I already told you to read the second edition with the corrections. Don't lie about his position again. |
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#15
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