![]() more The concept of gravity came into being in ancient times as a terrestrial concern associated with the practicalities of “weight.” A great leap forward came in the early 1600s with the important theoretical speculations of Johannes Kepler. The concept of gravity came into being in ancient times as a terrestrial concern associated with. In general relativity, PE is not even a well-defined concept. Simply put, if the relative position of any constituent changes, the corresponding interactions must change instantly, and that violates special relativity. Although PE is an extremely important classical (i.e., pre-relativistic) theoretical device, it depends on the positions of the interacting bodies at any and every moment. We will show, by simple argument, that PE is Lorentz invariant, even if it is not a rigorously proper relativistic quantity. ![]() It recognizes that a considerable change in the concept of PE has occurred over the last century, mostly as a result of both the special and general theories of relativity. This essay addresses that issue in a different, more fundamental and elegant way than has been done thus far. ![]() more In recent years, there have been a number of articles published concerning whether or not potential energy (PE) as defined in mechanics is invariant under Galilean transformation. ![]() In recent years, there have been a number of articles published concerning whether or not potenti.
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