Aviation dictionary. 2014.
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 focused ultrasound — Contents 1 Theory 2 Aiming 3 How HIFU works 4 Method of use … 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-Intensity Discharge Lamp — A lamp that consists of a sealed arc tube inside a glass envelope, or outer jacket. The inner arc tube is filled with elements that emit light when ionized by electric current. A ballast is required to provide the proper starting voltage and to … Energy terms
very high output light — an aquarium fluorescent light giving a higher intensity light than normal bulbs. Used for reef systems which require strong light … Dictionary of ichthyology
light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics … Universalium
Light characteristic — Symbols and abbreviations for light characteristics A light characteristic is a graphic and text description of a navigational light sequence or colour displayed on a nautical chart or in a Light List with the chart symbol for a lighthouse,… … Wikipedia
high pressure mercury arc lamp — an ultraviolet radiation lamp having a high vapor pressure with high intensity light because of linear spectral emissions in many wavelength ranges; used as a source of ultraviolet B for treating dermatologic disorders. See also Goeckerman… … Medical dictionary
High-energy radio-frequency weapons — (HERF) or High Power Radio Frequency weapons (HPRF) are weapons that use high intensity radio waves to disrupt electronics. They are a type of directed energy weapon. They operate similarly to electromagnetic pulse (EMP) devices, by inducing… … Wikipedia
Light therapy — Intervention Bright light therapy is a common treatment for seasonal affective disorder and for circadian rhythm disorders. ICD 10 PCS … Wikipedia
