June 30, 2020
velocity of light, binary stars
Abstract: Based on astronomers’ observations of binary stars, the hypothesis that the velocity of light is independent of the velocity of its source was accepted and the hypothesis that the velocity of light depends on the velocity of its source, known as Ritz ballistic hypothesis, was rejected. In this paper, the times in which the light from a binary star B on its orbit travels to an observer are calculated for both hypotheses. The result is applied to Algol, one of the examples of binary star systems that W. de Sitter pointed out to reject the Ritz ballistic theory. This study confirms astronomers’ conclusion that the velocity of light is independent of the velocity of its source.