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Photoflood lamps are a type of incandescent light bulb designed for use as a continuous light source for photographic lighting. [1] The filaments of such lamps are operated at much higher temperatures than is the case for standard, general lighting service lamps.
Minox stand-alone selenium meter. A selenium meter is a light-measuring instrument based on the photoelectric properties of selenium.The most common use of such light meters is measuring the exposure value for photography.
Three photoresistors with scale in mm Large CdS photocell from a street light. A photoresistor is less light-sensitive than a photodiode or a phototransistor. The latter two components are true semiconductor devices, while a photoresistor is a passive component that does not have a PN-junction. The photoresistivity of any photoresistor may vary ...
A floodlight is a broad-beamed, high-intensity artificial light. It can provide functional area lighting [ 1 ] for travel-ways, parking, entrances, work areas, and sporting venues to enable visibility adequate for safe task performance, ornamental lighting for advertising, façades, monuments, or support perimeter security. [ 2 ]
Two different types of phototubes. A phototube or photoelectric cell is a type of gas-filled or vacuum tube that is sensitive to light. Such a tube is more correctly called a 'photoemissive cell' to distinguish it from photovoltaic or photoconductive cells.
Costas, 72, called MLB games for 44 years, the vast majority of that with NBC. He started there in 1980 and over the years provides play-by-play for three World Series and 10 championship series.
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