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单词 relativistic mass
释义 relativistic mass
The mass of a moving body as measured by an observer in the same frame of reference as the body. According to the special theory of relativity the mass m of a body moving at speed v is given by
m = m0/v(1 - v2/c2)
, where m0 is its rest mass and c is the speed of light. The relativistic mass therefore only differs significantly from the rest mass if its speed is a substantial fraction of the speed of light. If
v = c/2
, for example, the relativistic mass is 15% greater than the rest mass
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更新时间:2025/6/23 6:46:20