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屈折角 (くっせつかく, kussetsukaku) Japanese meaning | Kotomora

屈くっ折せつ角かく

く

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Meanings

1

angle of refraction

Technical term in optics and physics; used in scientific contexts.

光ひかりが水みずに入はいるとき、屈くっ折せつ角かくは入にゅう射しゃ角かくより小ちいさくなる。

When light enters water, the angle of refraction becomes smaller than the angle of incidence.

Kanji

屈yield, bend, flinch
折fold, break, fracture
角angle, corner, square

Related words

入にゅう射しゃ角かく
入射角 is the angle of incidence, while 屈折角 is the angle of refraction.
反はん射しゃ角かく
反射角 is the angle of reflection, distinct from the angle of refraction.

Built from

屈くっ折せつ+角かく

Etymology

Compound of 屈折 (refraction) and 角 (angle). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.