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A common dual dimmer module used in stage lighting A dimmer. A dimmer is a device connected to a light fixture and used to lower the brightness of the light. By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output.
Lighting technicians are responsible for the movement and set up of various pieces of lighting equipment for separation of light and shadow or contrast, depth of field or visual effects. Lighting Technicians may also lay electrical cables, wire fixtures, install color effects or image patterns, focus the lights, and assist in creating effects ...
The square-wave nature of the power flow allows lamp life to be extended by as much as 20%. Most modern ballasts are now also equipped with a dimmer, which uses pulse-width modulation to dim the lamp up to 50%, or as much as one stop of light. Unlike a tungsten-based light, which has a negative color temperature shift with a drop in power, the ...
Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled ...
The number associated with a PAR light (e.g.: Par 64, Par 36, Par 16) indicates the diameter of the lamp in eighths of an inch. [9] Four different beam angles can be obtained on the PAR-64. The beam angle is determined by the lamp. Lamps come in "very narrow" (6° x 12°), "narrow" (7° x 14°), "medium" (12° x 28°), and "wide" (24° x 48°).
0-10V dimmer In production lighting this system was replaced by analog multiplexed systems such as D54 and AMX192 , which themselves have been almost completely replaced by DMX512 . For dimmable fluorescent lamps (where it operates instead at 1–10 V, where 1 V is minimum and 0 V is off), the system is being replaced by DSI , which itself is ...
Start off with something light before the heavier main event (hello, mashed potatoes!). This dip is so easy to make and comes together in minutes. This dip is so easy to make and comes together in ...
Water scatters light of shorter wavelengths above violet, meaning cooler colors dominate the visual field in the photic zone. Light intensity decreases 10 fold with every 75 m of depth, so at depths of 75 m, light is 10% as intense as it is on the surface, and is only 1% as intense at 150 m as it is on the surface.