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Science 27 November 1959:
Vol. 130. no. 3387, pp. 1471 - 1472
DOI: 10.1126/science.130.3387.1471-a
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Articles

The Clock Paradox

MARY L. BOAS 1

1 Department of Physics, DePaul University, Chicago, Illinois

In Minkowski space, a coordinate system can always be chosen so that the straight line (geodesic) joining two events (not on a null line) is either parallel to the time axis or parallel to the space axis. In either case the geodesic has maximum length (time dilatation and Lorentz contraction).

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Science. ISSN 0036-8075 (print), 1095-9203 (online)