音波

1. Origins, structure, and basic meaning

• Structure: 音波 is read as おんぱ and is a noun for a sound wave as a physical phenomenon.
• Basic usage: Its waveform appears in 音波の形, and it is the subject of reflection in 音波が反射する.

2. Common pitfalls and similar expressions

• Sound versus wave
  • The focus is not merely an impression heard by a listener but a wave that can be displayed and studied.
• Contact with a wall
  • In 壁に当たった音波, に marks what the wave strikes before it reflects.