also: おうは
transverse wave
Physics term for a wave where the oscillation is perpendicular to the direction of travel. Contrasts with 縦波 (longitudinal wave).
See also: 縦波 (たてなみ)
Light is a type of transverse wave.
beam sea
Nautical term for waves coming from the side of a vessel, causing rolling motion.
The ship rolled heavily in the beam sea.
Please explain the difference between transverse and longitudinal waves.
Standard kanji spelling; the reading よこなみ is the common pronunciation.
Rare on-reading; mostly encountered in technical or historical contexts.
Compound of 横 (side, horizontal) and 波 (wave). The reading よこなみ is the standard kun'yomi combination; おうは is the on'yomi reading used in specialized contexts.