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Relativity and Space Travel

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1 Author(s)
J. R. Pierce ; Bell Telephone Labs., Inc., Murray Hill, N.J.

This paper treats in terms of the special theory of relativity: a "clock paradox" involving the fact that the frequency of an atomic oscillator on a moving body is lowered but the mass which is converted into radiation is increased; the case of the twin who goes on a space trip at near-light speed and returns younger than his brother on earth; the shift in frequency in the presence of a gravitational field; the clock rate on a satellite; the speed attainable by a photon rocket; and a space ship propelled by the energy of interstellar matter.

Published in:

Proceedings of the IRE  (Volume:47 ,  Issue: 6 )