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单词 Planck constant(symbol: h)
释义
Planck constant(symbol: h)

Electronics and Electrical Engineering
  • A universal constant arising from Planck’s law, which states that the energy of electromagnetic radiation is confined to discrete packets or photons. The energy of each photon is given by hν, where ν is the frequency of the radiation. Planck’s law is fundamental to quantum theory. The value of h is

    6.6260755×1034joulesecond

    The rationalized Planck constant, h/2π (symbol ) has the value

    1.0545726×1034Js


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