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  2. Illumination problem - Wikipedia

    en.wikipedia.org/wiki/Illumination_problem

    Solutions to the illumination problem by George W. Tokarsky (26 sides) and David Castro (24 sides) This problem was also solved for polygonal rooms by George Tokarsky in 1995 for 2 and 3 dimensions, which showed that there exists an unilluminable polygonal 26-sided room with a "dark spot" which is not illuminated from another point in the room ...

  3. Troubleshooting - Wikipedia

    en.wikipedia.org/wiki/Troubleshooting

    Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms.

  4. Light fixture - Wikipedia

    en.wikipedia.org/wiki/Light_fixture

    A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.

  5. Category:Light fixtures - Wikipedia

    en.wikipedia.org/wiki/Category:Light_fixtures

    A light fixture or luminaire is a technical and professional term for the electrical fixtures used to hold a lamp—a light bulb—the light source. Wikimedia Commons has media related to Lighting fixtures .

  6. Dimmer - Wikipedia

    en.wikipedia.org/wiki/Dimmer

    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.

  7. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    The major advantage of a lighting control system over stand-alone lighting controls or conventional manual switching is the ability to control individual lights or groups of lights from a single user interface device. This ability to control multiple light sources from a user device allows complex lighting scenes to be created.

  8. Emergency light - Wikipedia

    en.wikipedia.org/wiki/Emergency_light

    Some emergency lighting manufacturers offer dimming solutions for common area emergency lighting to allow energy savings for building owners when unoccupied using embedded sensors. [4] Another popular method for lighting designers, architects and contractors are battery backup ballasts that install within or adjacent to existing lighting fixtures.

  9. Trouble light - Wikipedia

    en.wikipedia.org/wiki/Trouble_light

    A trouble light using a compact fluorescent lamp. From top to bottom are a hook, a cage, the switch and a handle in one molding. A trouble light, also known as a rough service light, drop light, or inspection lamp, is a special lamp used to illuminate obscure places and able to handle moderate abuse.