光速

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光速,意指光勒真空中个速率,是一个物理常量,一般记作c,精确值为299,792,458 米每秒(≈3.00×10 8 m/s)。箇一数值之所以是精确值,是因为米个定义就是基于光速搭国际辰光标准上个[1][2]


参考文献[编辑]

  1. Penrose, R(2004).The Road to Reality: A Complete Guide to the Laws of the Universe.Vintage Books,410–1.ISBN 978-0-679-77631-4.原文:“... the most accurate standard for the metre is conveniently defined so that there are exactly 299,792,458 of them to the distance travelled by light in a standard second, giving a value for the metre that very accurately matches the now inadequately precise standard metre rule in Paris.” 
  2. Uzan, J-P(2008).The Natural Laws of the Universe: Understanding Fundamental ConstantsSpringer,43–4.ISBN 0-387-73454-6