入にゅう射しゃ角かく

noun

angle of incidence

Technical term in physics and optics; the angle between an incoming ray and the normal to a surface.

• 入にゅう射しゃ角かくが大おおきくなると、反はん射しゃ率りつも変へん化かする。

  As the angle of incidence increases, the reflectance also changes.

• 光ひかりの入にゅう射しゃ角かくを測はかってください。

  Please measure the angle of incidence of the light.