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 2000 Profile. 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 correspondi. Used MAC 2000 Profile. ng to 273.15 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...
Preset Boards - Preset boards are the most basic lighting consoles - and also the most prevalent in smaller installations. They consist of two identical fader banks, called 'scenes.' The faders (control slides) on th. Used MAC 2000 Profile. ese scenes can be manually adjusted. Each scene has the same number of channels which control the same dimmers, but only one is live at a time, so the console operator can bui. Used MAC 2000 Profile. ld a scene, then fade to it. These scenes are often referred to as A-scenes and B-scenes, and a cross-fader is used to fade between the A and B scene.
Generally, a preset board operator has a cue sheet for each s...
Stage Lighting - Modern stage lighting is a flexible tool in the production of theatre, dance, opera and other performance arts. Several different types of lighting instruments are used in the pursuit of the various p. Used MAC 2000 Profile. rinciples or goals of lighting. . Used MAC 2000 Profile. ...
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 2000 Profile. in which light rays having different polarizations are absorbed by different amounts.
The original meaning of dichroic (from the Greek dikhroos, two-coloured) ref. Used MAC 2000 Profile. ers to any 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 ...
Effects - Lighting Effects are devices that are generally used to enhance other lighting or staging devices, like foggers, lasers or pyrotechnics and can also have and effect on setting the mood during a perfor. Used MAC 2000 Profile. mance like color changers.
. Used MAC 2000 Profile. ...