Kelvin - The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. It is defined by two facts: zero kelvins is absolute zero (when molecular motion stops), and one kelvin is . Used MAC TW-1. the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. The Celsius temperature scale is now defined in terms of the kelvin, with 0 °C corresponding to 27. Used MAC TW-1. 3.15 kelvins, approximately the freezing point of water under ordinary conditions.
The kelvin is named after the British physicist and engineer William Thomson, 1st Baron Kelvin; his barony was in turn na...
Dichroic - In optics, the term dichroic has two related but distinct meanings. A dichroic material is one which either causes light to be split up into distinct beams of different wavelengths (colours), or, one . Used MAC TW-1. in which light rays having different polarizations are absorbed by different amounts.
The original meaning of dichroic (from the Greek dikhroos, two-coloured) refers to a. Used MAC TW-1. ny optical device which can split a beam of light into two beams with differing wavelengths. Such devices include mirrors and filters, usually treated with optical coatings, which are designed to reflect light over a ...
Lighting Desk - Lighting control consoles (also called lighting boards or lighting desks) are electronic devices used in theatrical lighting design to control multiple lights at once. They are used throughout the ent. Used MAC TW-1. ertainment industry and are normally placed at the FOH position or in a control booth.
All lighting control consoles can control dimmers which, in turn, control the brigh. Used MAC TW-1. tness of the lights. Many modern consoles can also control intelligent lights (lights that can move and change colors), fog machines and hazers, and other special effects devices.
Consoles communicate wit...
Arc Lamp - An arc lamp is a device that produces light by the sparking (or arcing, from voltaic arc or electric arc) of a high current between two carbon rod electrodes. The rods are touched and then slowly draw. Used MAC TW-1. n apart; as the rods separate the current is "struck" and arcs across the gap in a bright, ionized path. The arc produces a temperature of several thousand degrees, and the tips of th. Used MAC TW-1. e carbon rods are heated to incandescence, creating light. The rods are slowly vaporized during the process and need to be regularly adjusted to maintain the arc. The concept was first demonstrated by Sir Humphry Davy...
Bulbs - A Bulb or light bulb is a source of artificial light. There are many different kinds of bulbs including High Intensity Discharge or HIDs, Halogen, Fluorescent and Light Emitting Diodes, but the most . Used MAC TW-1. common is the incandescence that works by the release of electromagnetic radiation. . Used MAC TW-1. ...