V2EX bohr magneton

Bohr Magneton

释义 Definition

玻尔磁子:原子物理与量子力学中常用的磁矩单位,表示电子由于轨道角动量或自旋而产生的“磁性强度”的典型量级。常记作 μ_B,用于描述电子磁矩、塞曼效应(Zeeman effect)等现象。(在某些语境下也会提到“核磁子 nuclear magneton”等其他类似单位。)

发音 Pronunciation (IPA)

/br mntn/

例句 Examples

The Bohr magneton is a standard unit for an electron’s magnetic moment.
玻尔磁子是衡量电子磁矩的标准单位。

In a magnetic field, the energy splitting depends on the electron’s magnetic moment, often expressed in Bohr magnetons.
在磁场中,能级劈裂的大小取决于电子的磁矩,而磁矩常用玻尔磁子来表示。

词源 Etymology

“Bohr”来自丹麦物理学家尼尔斯玻尔(Niels Bohr)的姓氏;“magneton”源自“magnet(磁)”加上常见于物理量名称的后缀“-on”,用来表示与磁相关的基本量或单位。该术语用于强调:在原子尺度上,电子磁矩具有一个非常典型、可作为基准的自然单位。

相关词 Related Words

文学与著作 Literary Works

  • Quantum Mechanics(Claude Cohen-Tannoudji 等):在讨论自旋、磁矩与外磁场相互作用时频繁使用 μ_B。
  • Introduction to Quantum Mechanics(David J. Griffiths):在塞曼效应、电子自旋磁矩等章节中常以玻尔磁子作为单位。
  • Solid State Physics(Ashcroft & Mermin):在固体磁性、顺磁与能带相关推导中常用玻尔磁子表达磁矩量级。
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