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Various measures are taken for optical overheating protection. Stagnation temperatures are encountered under conditions of high radiation while no heat transfer fluid is flowing through the collector, for example during power failures, component failures, servicing, energy storage capacity limitations, or periods when little hot water is ...
A thermal switch (sometimes thermal reset or thermal cutout (TCO)) is a device which normally opens at a high temperature (often with a faint "plink" sound) and re-closes when the temperature drops. The thermal switch may be a bimetallic strip , often encased in a tubular glass bulb to protect it from dust or short circuit .
A spotlight is any lighting instrument used in theater to create a pool of light on the stage. [18] There are many different types of spotlights which break down into three general areas: Fresnel lanterns or Fresnels (US) are small fixtures giving a soft-edged spot or pool of light. Their name comes from the distinctive ridged Fresnel lens used ...
Eurotherm is a supplier of control and measurement instruments to industrial and process markets. They are part of Watlow , an electricity distribution, automation management and producer of installation components for energy management company.
Stage lighting is the craft of lighting as it applies to the production of theater, dance, opera, and other performance arts. [1] Several different types of stage lighting instruments are used in this discipline. [ 2 ]
Similar to fluorescent lights, HMIs present problems with color temperature when used for film or video lighting applications.Unlike incandescent-lighting units, which are blackbody radiators limited to a theoretical maximum of 3680 K (the melting point of tungsten), HMI lamps, like all gas discharge lighting, emit the emission spectral lines of its constituent elements, specifically chosen so ...
A lighting control console (also called a lightboard, lighting board, or lighting desk) is an electronic device used in theatrical lighting design to control multiple stage lights at once. They are used throughout the entertainment industry and are normally placed at the front of house (FOH) position or in a control booth .
A strong light source, often a high-intensity discharge lamp with a high colour temperature. A lens which can be manually focused. A manual device to change the intensity of the beam, especially when an HID source which can not be electronically dimmed, is used. An "iris" to adjust the size of the spot/angle of the beam.