疎そ密みつ波は

noun

compressional wave; longitudinal wave

Physics term for a wave in which particle displacement is parallel to the direction of propagation, creating alternating regions of compression and rarefaction. Used in acoustics, seismology, and solid mechanics.

• 音おん波ぱは空くう気き中ちゅうを疎そ密みつ波はとして伝つたわる。

  Sound waves travel through air as compressional waves.

• 地じ震しんのP波はは疎そ密みつ波はの一いっ種しゅである。

  Seismic P-waves are a type of longitudinal wave.