Arago spot

短语

词形变化

Arago spots 复数 Arago spots

释义与例句

n.
  1. 1.

    A bright point that appears at the centre of a circular object's shadow due to Fresnel diffraction.

    工程 物理

    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.

词源

Named after Dominique-François-Jean Arago, who performed an experiment demonstrating the spot's existence.

来源：wiktionary