Text: "Thought experiments at superluminal relative velocities." Examines two similar worlds, such as ours, moving at relative velocities greater than the speed of light. Observations are distorted so that each world sees the squares of certain real quantities in the other world as negative. Neglect of this fact has led to erroneous belief that a free charged tachyon would emit Cherenkov radiation and that the existence of tachyons would lead to logical paradoxes. Key analysis for the possibility of a ""door"", or coupling, between the scalar electromagnetics and our hadronic electromagnetics. International Journal of Theoretical Physics. 15(9), Sept. 1976. p. 703-712.

See Also: tachyons, superluminal velocities, relativity, foundations of physics.

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