Einstein (unit)

The auxiliary unit Einstein ( unit symbol: E ) is occasionally used in the photo-and biochemistry to specify the number of light quanta, ie photons. It is no SI unit and should not be used. A Einstein corresponds to a mole and is therefore nothing else than the numerical value of the Avogadro constant in mol-1, ie 1 e = 6.022 1023.

Similar percent, Radiant and Bel is also the Einstein quantitative indication of physical quantities of dimension 1, thus specifying a number.

An example of use is photosynthesis: the case of complete yield of the incident sunlight that is practically impossible, of course, Einstein 8 are used for production of a mole of oxygen needed, that is, eight photons per molecule. There is no statement is made about the energy or wavelength of the photons.

The unit is named in honor of Albert Einstein, who made ​​it clear in 1905 the photoelectric effect by the formulation of the hypothesis of light quanta.

  • Photochemistry
  • A chemical entity
  • Unit
  • Outdated unit (Physics)
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