also: さんかくは
noun
choppy sea; chopping waves
Describes a sea surface with short, steep, triangular-shaped waves, often caused by wind against current.
台風の後、港の外は三角波が立っていた。
After the typhoon, there were choppy waves outside the harbor.
noun
triangle wave
Only with reading さんかくは
Technical term in physics and signal processing for a periodic waveform with a triangular shape.
三角波は正弦波や矩形波と並んで基本的な波形の一つです。
The triangle wave is one of the fundamental waveforms along with sine and square waves.