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  2. Victoria State Emergency Service - Wikipedia

    en.wikipedia.org/wiki/Victoria_State_Emergency...

    Light mast (up to 7.5m from ground) with 4 x 24v LED lights. External work lights at the mid point of the body, controlled by the Hazard SLIC panel. Martin power supply of 8kVA with 8 x 10A GPO. Compressed air system delivering 15 cubic feet per minute (CFM) at 130psi. Bull bar fitted with HID driving lights; No tow bar fitted; Equipment ...

  3. Track lighting - Wikipedia

    en.wikipedia.org/wiki/Track_lighting

    Track lighting is a method of lighting where light fixtures are attached anywhere on a continuous track device which contains electrical conductors. [1] [2] This is in contrast to directly routing electrical wiring to individual light positions. Tracks can either be mounted to ceilings or walls, lengthwise down beams, or crosswise across ...

  4. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    The flat bottom surfaces of the anvil and post embedded inside the epoxy act as anchors, to prevent the conductors from being forcefully pulled out via mechanical strain or vibration. A light-emitting diode ( LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron ...

  5. LED lamp - Wikipedia

    en.wikipedia.org/wiki/LED_lamp

    An LED lamp or LED light [1] is an electric light that produces light using light-emitting diodes (LEDs). LED lamps are significantly more energy-efficient than equivalent incandescent lamps and fluorescent lamps. [2] [3] [4] The most efficient commercially available LED lamps have efficiencies exceeding 200 lumens per watt (lm/W) and convert ...

  6. Light-emitting diode physics - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode_physics

    A LED is a long-lived light source, but certain mechanisms can cause slow loss of efficiency of the device or sudden failure. The wavelength of the light emitted is a function of the band gap of the semiconductor material used; materials such as gallium arsenide , and others , with various trace doping elements , are used to produce different ...

  7. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    One version is a horizontal bar with five lights – the green and amber arrows are located between the standard green and amber lights. A vertical five-light bar holds the arrows underneath the standard green light (in this arrangement, the amber arrow is sometimes omitted, leaving only the green arrow below the steady green light, or possibly ...

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