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The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [ 1 ] [ 2 ] Color temperature has applications in lighting , [ 3 ] photography , [ 4 ] videography , [ 5 ] publishing , [ 6 ] manufacturing , [ 7 ] astrophysics , [ 8 ] and other fields.
Combat Skyspot was the ground-directed bombing (GDB) operation of the Vietnam War by the United States Air Force using Bomb Directing Centrals and by the United States Marine Corps using Course Directing Centrals ("MSQ-77 and TPQ-10 ground radars"). [5]
A light-emitting diode (LED) ... (commonly 2700K and 6500K) to produce intermediate values. ... Surface-mounted LEDs are frequently produced in chip on board (COB) ...
The PCB of a quartz watch. The clock IC is under the drop of black epoxy. Chip on board (COB) is a method of circuit board manufacturing in which integrated circuits (e.g. microprocessors) are attached (wired, bonded directly) to a printed circuit board, and covered by a blob of epoxy. [1]
Arc Light missions continued until the cessation of hostilities by U.S. forces on August 15, 1973. Between June 1965 and August 1973, 126,615 sorties (B-52D/F/G) were flown over Southeast Asia. During those operations, the U.S. Air Force lost 31 B-52s; 18 were lost from hostile fire over North Vietnam and 13 from operational causes.
High power light-emitting diodes (LEDs) can use 350 milliwatts or more in a single LED. Most of the electricity in an LED becomes heat rather than light – about 70% heat and 30% light. [1] If this heat is not removed, the LEDs run at high temperatures, which not only lowers their efficiency, but also makes the LED less reliable, shortens its ...
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