high-intensity lights

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• High-intensity discharge lamp — A High intensity discharge (HID) lamp is a type of electrical lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina tube. This tube is filled… …   Wikipedia

• High-intensity discharge (HID) lamp —   A lamp that produces light by passing electricity through gas, which causes the gas to glow. Examples of HID lamps are mercury vapor lamps, metal halide lamps, and high pressure sodium lamps. HID lamps have extremely long life and emit far more …   Energy terms

• High-Pressure Sodium Lamp —   A type of High Intensity Discharge (HID) lamp that uses sodium under high pressure as the primary light producing element. These high efficiency lights produce a golden white color and are used for interior industrial applications, such as in… …   Energy terms

• approach lights — A system of high intensity lights located along the approach path of an instrument runway. The lights radiate beams in a directional pattern by which a pilot aligns the aircraft with the extended centerline of the runway on the final approach for …   Aviation dictionary

• High Frequency Active Auroral Research Program — HAARP is often confused with Project HARP, the High Altitude Research Project (a joint project of The Pentagon and the Canadian Department of National Defence).The High Frequency Active Auroral Research Program (HAARP) is an investigation project …   Wikipedia

• high beam — All cars have at least two levels of lighting for night driving. The low beam is used when there are other vehicles approaching or when you are following another vehicle. The high beam is used when driving on poorly lit roads where there is no… …   Dictionary of automotive terms

• High dynamic range imaging — In image processing, computer graphics, and photography, high dynamic range imaging (HDRI) is a set of techniques that allows a greater dynamic range of exposures (the range of values between light and dark areas) than normal digital imaging… …   Wikipedia

• Aircraft warning lights — are high intensity lighting devices that are attached to tall structures and used as collision avoidance measures. Such devices make the structure much more visible to passing aircraft and are usually used at night, although in some countries… …   Wikipedia

• Runway edge lights — are used to outline the edges of runways during periods of darkness or restricted visibility conditions. These light systems are classified according to the intensity they are capable of producing: High Intensity Runway Lights (HIRL) Medium… …   Wikipedia

• Aircraft landing lights — Landing lights are lights used on aircraft to illuminate the terrain and runway ahead during takeoff and landing.OverviewAlmost all modern aircraft are equipped with landing lights if they are intended and approved for nighttime operations.… …   Wikipedia

• runway-end identification lights — An airport lighting facility in the terminal area navigation system consisting of one flashing white high intensity light installed at each approach end corner of a runway and directed toward the approach zone. These lights, which may be… …   Aviation dictionary