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词汇 mechanical equivalent of light
释义

Definition of mechanical equivalent of light in English:

mechanical equivalent of light

noun
  • The ratio of radiant flux to luminous flux, expressed in watts per lumen (= 0.0015 watt per lumen at 555 nm wavelength).

Origin

Early 20th century; earliest use found in Proceedings of the Royal Society of London.

Definition of mechanical equivalent of light in US English:

mechanical equivalent of light

noun
  • The ratio of radiant flux to luminous flux, expressed in watts per lumen (= 0.0015 watt per lumen at 555 nm wavelength).

Origin

Early 20th century; earliest use found in Proceedings of the Royal Society of London.

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