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An array of photovoltaic cells which includes an optical component such as a lens or focusing mirror to direct incident sunlight onto a solar cell thereby increasing the efficiency of solar panels.

Con"cen*tra`tor (?), n. (Mining)

An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air. Knight.


© Webster 1913

Con"cen*tra`tor, n. (Firearms)

A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.


© Webster 1913

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