Parabolic aluminized reflector light — A Parabolic Aluminized Reflector luminaire 20 PAR cans A parabolic aluminized refle … Wikipedia
Multifaceted reflector — Left to right: MR16 with GU10 base and with GX5.3 base, MR11 with GU4 or GZ4 base MR16 and MR11 (sometimes referred to as MR 16 or MR 11, rarely MR8 or MR 8) are standard formats for halogen multifaceted reflector light bulbs made by a variety of … Wikipedia
Distributed Bragg reflector — A distributed Bragg reflector (DBR) is a reflector used in waveguides, such as optical fibers. It is a structure formed from multiple layers of alternating materials with varying refractive index, or by periodic variation of some characteristic… … Wikipedia
Distributed Bragg reflector — Berechnete Reflektivität eines idealen DBRs Der englischsprachige Begriff distributed Bragg reflector (DBR) bezeichnet einen effizienten Reflektor, der in Lichtleitern oder in optischen Resonatoren eingesetzt wird. Er besteht aus alternierenden,… … Deutsch Wikipedia
Solar thermal energy — Solar thermal system for water heating in Santorini, Greece … Wikipedia
telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… … Universalium
Stage lighting instrument — Stage lighting instruments are used in stage lighting to illuminate theatrical productions, rock concerts and other performances taking place in live performance venues. They are also used to light television studios and sound stages.Terminology… … Wikipedia
sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… … Universalium
Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 mi. (140 km) long; 3 30 mi. (5 48 km) wide. Swedish and Danish, Oresund. * * * I Mechanical disturbance that propagates as a longitudinal wave… … Universalium
radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… … Universalium
Incandescent light bulb — The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric light that works by incandescence, (a general term for heat driven light emissions which includes the simple case of black body radiation). An… … Wikipedia