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Word: rav (lookup in dictionary) (lookup stats)
Dates: during 1930-1939
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Usage:

...Birkhoff system, the hydrogen atom is contemplated as a mixture of two "perfect fluids"-the positive electricity of the nucleus, the negative electricity of the surrounding electron. The disturbance created in the fluids by a particle or light rav from outside can be expressed, very roughly speaking, as though they were water rippled by a falling stone. Furthermore, the expression can be formulated in Relativistic terms. Whether atoms with more than one electron can be crammed into the same mold remains to be seen...

Author: /time Magazine | Title: Science: Holiday | 1/11/1937 | See Source »

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