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单词 coupling constant
释义

coupling constant

noun Physics
A constant representing the strength of the interaction between a particle and a field.Newton's constant is the coupling constant for the gravitational force, for example....
  • For electromagnetism, the coupling constant is called the fine structure constant a and is formed by the electron charge, Planck's constant and the speed of light.
  • But its predictions for the coupling constants - the constants that describe the strengths of the strong, weak and electromagnetic interactions - were wrong.
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更新时间:2024/9/21 21:52:42