Harmonica

device · 1821 · Industrial Revolution

A free-reed instrument.

What it is made of

• Metal reeds — has part. Metal reeds vibrate in a flow of air.
• Harmonica reed plates — has part. Plates with slots for the reeds.
• Harmonica comb — has part. Air channels.

Principles and materials it uses

• Brass — is made of. The reeds are brass.
• Wood — is made of. The comb is wooden.

Things built in a similar way

• Accordion — works like. Free-reed instruments; air comes from the lungs instead of bellows.

Take Harmonica apart

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