A stethoscope carries body sounds through a tube so a listener can hear them more clearly.

The longer version

A chest piece picks up vibrations from the body surface and the air within it, and a tube carries that energy to both ears while keeping most of it away from the room. The sealed path prevents loss, so faint low murmurs and crackles stay audible.

A diaphragm favours higher vibrations while an open bell favours lower ones, so the same instrument reveals different clues depending on which side is used and how firmly it is pressed. Before the tube existed, listeners put an ear directly on the chest. Rolling a sheet of paper into a cone was an early step toward the modern device.

Where this entry sits

Sound and Music gathers facts about how vibrations move through air and water, how ears turn them into meaning, and how instruments and notation shape what listeners hear. Expect echoes, pitch, volume, acoustics, and the odd silence in between. The full list sits on the Sound and Music page, where every entry is listed in order.