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Space and Time: Inertial Frames

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[Revised entry by Robert DiSalle on April 15, 2020. Changes to: Main text, Bibliography] A "frame of reference" is a standard relative to which motion and rest may be measured; any set of points or objects that are at rest relative to one another enables us, in principle, to describe the relative motions of bodies. A frame of reference is therefore a purely kinematical device, for the geometrical description of motion without regard to the masses or forces involved. A dynamical account of motion leads to the idea of an "inertial frame," or a reference frame relative to which motions have distinguished dynamical...

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News source: Stanford Encyclopedia of Philosophy

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