Keywords

#fine-structure_constant

Fine-structure constant

Dimensionless number that quantifies the strength of the electromagnetic interaction

In physics, the fine-structure constant, also known as the Sommerfeld constant, commonly denoted by α, is a fundamental physical constant which quantifies the strength of the electromagnetic interaction between elementary charged particles.

Fri 13th

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Fine-structure constant Fine structure Dimensionless physical constant Physical constant Variable speed of light List of physical constants Time-variation of fundamental constants Vacuum permeability Coupling constant Precision tests of QED
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