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单词 atomic unit
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atomic unit
atomic unit n. Physics a unit in a system in which certain fundamental constants, such as the mass and charge of the electron and the Bohr radius, are assigned the value 1.
ΚΠ
1928 D. R. Hartree in Proc. Cambr. Philos. Soc. 24 91 It is convenient to express quantities in terms of units, which may be called ‘atomic units’.
1976 Nature 16 Sept. 191/2 The very large dimensionless ratio which one obtains by expressing the age of the universe in atomic units of some sort.
2007 Chem. Physics 335 218/1 In the above equations atomic units are applied throughout.
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