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Lecture - Bob Lambourne - "Astronomy and the speed of light"

  • Coleshill Village Hall Barracks Hill Amersham, England, HP7 United Kingdom (map)

The speed of light in a vacuum, c, is one of the most important constants of nature. It even plays a fundamental role in the definition of the metre, the internationally accepted unit of length. This talk examines the reasons why the speed of light has become so important, and explains the particular role that astronomy has played in establishing its value and its significance.