Arago spot

名词 n.

英文释义

名词 n.
  1. A bright point that appears at the centre of a circular object's shadow due to Fresnel diffraction.
    — The Arago spot played an important role in the discovery of the wave nature of light and is a common way to demonstrate that light behaves as a wave.

词形变化

Arago spots plural

词源

Named after Dominique-François-Jean Arago, who performed an experiment demonstrating the spot's existence.
1 次浏览 数据来源: Wiktionary