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HID lamps are used in high-performance bicycle headlamps, as well as flashlights and other portable lights, because they produce a great amount of light per unit of power. As the HID lights use less than half the power of an equivalent tungsten-halogen light, a significantly smaller and lighter-weight power supply can be used.
It is a type of high-intensity discharge (HID) gas discharge lamp. [1] Developed in the 1960s, they are similar to mercury vapor lamps, [1] but contain additional metal halide compounds in the quartz arc tube, which improve the efficiency and color rendition of the light. The most common metal halide compound used is sodium iodide. Once the arc ...
Since fixtures using discharge type lamps produce a light of a considerably higher color temperature than do tungsten lamps, using the two in conjunction could potentially produce a stark contrast, so sometimes fixtures with HID lamps, commonly producing light of 6000–7000 K, are fitted with 3200 K filters to emulate tungsten light. Fixtures ...
It was based on the SL1000 prototype from 1976. [12] In 1985, Osram started selling its model Dulux EL, which was the first CFL to include an electronic ballast. [13] Volume was an issue in CFL development, since the fluorescent lamps had to fit in the same volume as comparable incandescent lamps.
0.1 × ( 12 ÷ 8 ) = 0.15 grain per dscf when corrected to a gas having a specified reference CO 2 content of 12 volume %. Notes: Although ppmv and grains per dscf have been used in the above examples, concentrations such as ppbv (i.e., parts per billion by volume), volume percent, grams per dscm and many others may also be used.
On 7 October 2023, a large escalation of the Gaza–Israel conflict began with a coordinated offensive by multiple Palestinian militant groups against Israel.A number of countries, including many of Israel's Western allies, such as the United States and a number of European countries, condemned the attacks by Hamas, expressed solidarity for Israel and stated that Israel has a right to defend ...
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