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fine-structure constant

Noun CEFR B2

Definitions

The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force. Equal to about 1/137 = 0.0072973525.

uncountable

Equivalents

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CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

fine-tooth comb fine-tooth comb test fine-tune fine-tuned universe Fineberg Fined

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