Cover of Time machines

Time machines

time travel in physics, metaphysics, and science fiction

by Paul J. Nahin

1993 408 pages eng

"Time Machines explores the history of time travel in fiction; the fundamental scientific concepts of time, spacetime, and the fourth dimension; the speculations of Einstein, Richard Feynman, Kurt Godel, and others; scientific hypotheses about the direction of time, reversed time, and multidimension…

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