What is Bell

A sound source (sound-making device). It can be used for many purposes: religious, musical, alarming, etc. From a musical point of view the bell is a percussion instrument. Usually the bell is molded by metal alloy in a form of a hollow cylinder or truncated cone with an open end that resonates as being struck. The chime is produced by a metal piece, named a clapper. The clapper can be movable while the body of the bell is immovable and vice versa. The bell chime is very rich of overtones. In an antiquity (and nowadays) the molding of bells was considered as art and high technology.

Storage and Retrieval of Multimedia Data about Unique Bulgarian Bells

Tihomir Trifonov (Department of Mathematics and Informatics, University of Veliko Tarnovo, Bulgaria) and Tsvetanka Georgieva-Trifonova (Department of Mathematics and Informatics, University of Veliko Tarnovo, Bulgaria)