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Jun 23, 2017 at 12:05 comment added Diracology It means we let two of them close to each other and infinitely far from the rest.
Jun 23, 2017 at 11:22 comment added Khalid T. Salem "Let us consider a set of particles and an inertial frame. If we let any two of these particles to mechanically pairwise interact, isolated from the rest, then it is an empirical fact that they accelerate with opposite accelerations." I don't quite understand what is mean by "interact"? What do we do to let the particles "interact"?
Jun 22, 2017 at 18:39 comment added Diracology The kilogram is, by definition, the mass of the reference particle described above.
Jun 22, 2017 at 18:19 comment added Khalid T. Salem So the number or label m is quite arbitrary, just like temperature, what does it have to do with kilograms? How do we make this connection? And why would newton say this about mass? I mean, after all, he must've known that it's a label, so that must mean that there was a connection between that and what is measured empirically and represents the amount of matter.
Jun 22, 2017 at 17:47 history answered Diracology CC BY-SA 3.0