V2EX binding-energy

Binding Energy

定义 Definition

结合能 / 束缚能:把一个由多个部分组成的体系(如原子核、原子、分子或固体中的粒子)完全分离开所需要的能量;等价地,也可理解为这些部分结合在一起时释放的能量。在核物理中常指核结合能,在化学中也可泛指化学键能(语境不同,侧重点不同)。

发音 Pronunciation

/band nrdi/

例句 Examples

The binding energy of the nucleus helps explain why it is stable.
原子核的结合能有助于解释它为什么稳定。

By comparing binding energies across isotopes, scientists can predict which nuclear reactions are likely to release energy.
通过比较不同同位素的结合能,科学家可以预测哪些核反应更可能释放能量。

词源 Etymology

binding 来自动词 bind(“捆绑、结合”),表示“使……结合在一起的”;energy 源自希腊语 energeia(“活动、作用”)。合在一起的 binding energy 字面意思就是“把东西‘结合’在一起所对应的能量”,在物理与化学中逐渐固定为专门术语,用来描述体系内部的束缚强度”。

相关词 Related Words

文学与名著用例 Literary Works

  • The Feynman Lectures on Physics(费曼《物理学讲义》)
  • Introduction to Nuclear Physics(《核物理导论》类教材常见术语)
  • Concepts of Modern Physics(Beiser,《现代物理概念》)
  • Physical Chemistry(Atkins,《物理化学》;在讨论键能/结合能时出现)
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