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A SPECIAL CAUSAL RELATION IN TAUB’S AND KAR’S PLANE-SYMMETRIC SPACETIMES |
| KUANG Zhiquan1;LIANG Canbin2 |
| 1Institute of Mathematics, Academia Sinica, Beijing
2Department of Physics, Beijing Normal University, Beijing |
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| Cite this article: |
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KUANG Zhiquan, LIANG Canbin 1986 Chin. Phys. Lett. 3 29-32 |
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Abstract It is proved that in Taub's and Kar's plane-symmetric spacetime, a future directed null geodesic emanating from a point “p”will enter the chronological future of “p”. Physically, this implies that the light signal from a movie projector with its back to the screen will finally come back to the screen and form a movie which looks exactly the same as the true one.
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Published: 01 January 1986
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