ここに故障があります：
* 機械波： These waves require a medium to travel through (like sound waves traveling through air or water waves traveling through water). In this case, the matter in the medium *does* move, but it doesn't travel the entire distance of the wave. Instead, the matter oscillates (vibrates) around its equilibrium position. Think of a ripple in a pond – the water molecules move up and down, but they don't travel across the pond with the ripple.
* 電磁波： These waves don't require a medium to travel; they can move through the vacuum of space. In this case, the matter that makes up the wave (electric and magnetic fields) *does* travel with the wave. Think of light – it's made up of oscillating electric and magnetic fields that travel together, forming a wave.
So, in summary:
* For mechanical waves, the medium moves, but not with the wave itself.
* For electromagnetic waves, the matter that makes up the wave (electric and magnetic fields) travels with the wave.
It's important to remember that waves are disturbances that travel, not the matter itself. Even in mechanical waves, the medium particles don't travel the full distance of the wave; they just oscillate around a fixed position.
