Last Updated：2025/11/19

(electrodynamics) The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force.

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fine-structure constant

Source Word

fine-structure constant

in our Universe

(electrodynamics) The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force.

Japanese Meaning

電磁相互作用の強さを示す基本的な物理定数（α）

Recent precision measurements of the fine-structure constant could hint at new physics beyond the Standard Model.

最近行われた微細構造定数（α）の高精度測定は、標準模型を超える新たな物理の存在を示唆するかもしれない。

Sense（1）

(electrodynamics) The fundamental physical value α, presumed to be constant, that characterizes the strength of the electromagnetic force.

Sense（2）

(in our Universe) a value of approximately 1/137 = 0.0072973525