A bell is a simple sound-making device. The bell is a percussion instrument and an idiophone. Its form is usually a hollow, cup-shaped acoustic resonator, which vibrates upon being struck.Bells are usually made by casting metal, but small bells can also be made from ceramic or glass A set of bells, hung in a circle for change ringing, is known as a ring of bells or peal of bells.

A bell is a simple sound-making device. The bell is a percussion instrument and an idiophone. Its form is usually a hollow, cup-shaped acoustic resonator, which vibrates upon being struck.Bells are usually made by casting metal, but small bells can also be made from ceramic or glass A set of bells, hung in a circle for change ringing, is known as a ring of bells or peal of bells.