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Absorption - A surfaces ability to absorb sound. Absorption is rated from 0 to 1.

Full absoption is 1. Full reflection is 0. . Used . . Used .

Zone Focusing - Technique for focusing a lens so that the field depth extends over a predetermined scope of distances making an entire area, or zone, in focus rather than one specific subject. . Used . . Used . ...

Ampere - The ampere (symbol: A) is the SI base unit of electrical current equal to one coulomb per second. It is named after André-Marie Ampère, one of the main discoverers of electromagnetism.

Th. Used . e ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would . Used . produce between these conductors a force equal to 2×10–7 newton per metre of length....

Wrap - A term used in Rigging for a short sling used to wrap a beam or truss or the action of wrapping a truss. In film and television production WRAP is an acronym for Wind Reel And Print and announces the. Used . end of a scene or session. . Used . ...

Zirconium Lamp - A high intensity point source arc lamp using a zirconium oxide cathode in an argon-filled bulb. Used in powerful projectors because of its low emanation of long-wavelength light and its concentrated . Used . source. Similar to the Drummond light or Limelight, but differing from them chiefly in the employment of cones of zirconium instead of cylinders of lime. It has been outdated and replaced b. Used . y electric lighting....