Cylinder

From Encyclopedia Jr, free information reference for Kids

Cylinder may refer to:

• Cylinder (geometry), a three-dimensional geometric surface
• Cylinder (algebra), the cartesian product of a set with its superset
• Cylinder (engine), the space within which a piston travels in an engine
• Cylinder (disk drive), a unit of data division on a hard disk drive
• Gas cylinder, containers used to store compressed gases or compressed air
• Diving cylinder, a type of gas cylinder used in Scuba diving
• Graduated cylinder, glassware used for measurement of liquids in laboratories
• Phonograph cylinder, the dominant medium of audio storage from the 1870s to the 1910s and in limited use (such as in the dictaphone) through the mid 20th century
• Cylinder (firearms), the cylinder is the rotating device that contains the firing chambers of a revolver
• A type of lens and a form of refraction error

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