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Auteur: Pentcho Valev - Posté le: 10 Avr 2007 à 07:55
Relativists often imagine themselves as observers occupying various places in the universe; observers who observe light coming from various celestial bodies and measure its speed. This speed is always constant c=299792km/s because Divine Albert has said so. Apart from being always constant c=299792km/s, the speed of light is always variable - e.g. 299794km/s,...
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