投とう射しゃ角かく

noun

angle of projection; angle of incidence

Technical term used in physics and engineering for the angle at which something is projected or strikes a surface.

• 投とう射しゃ角かくが大おおきいほど、物ぶっ体たいは高たかく上あがる。

  The larger the angle of projection, the higher the object goes.

• 光ひかりの投とう射しゃ角かくを変かえると、反はん射しゃの仕し方かたも変かわる。

  Changing the angle of incidence of the light also changes how it reflects.