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Most manufacturers now use field angle to indicate the fixture's spread typically in this series (5°, 10°, 19°, 26°, 36°, 50°, 75°, 90°). Older fixtures are described by the width of the lens x focal length of the instrument. For example, a 6x9 ellipsoidal would have a 6" diameter lens and a focal length of 9".
A top hat, also known as a stove pipe or snoot, is a device used in theatrical lighting to shield the audience's eyes from the direct source of the light. [1] It is shaped like a top hat with a hole in the top, and the brim being inserted into the gel frame holder on a lighting instrument.
Fluorescent lamps are a non-linear load and generate harmonic currents in the electrical power supply. The arc within the lamp may generate radio frequency noise, which can be conducted through power wiring. Suppression of radio interference is possible. Very good suppression is possible, but adds to the cost of the fluorescent fixtures.
A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.
Melton averaged 10.3 points and 3.3 rebounds per game with the Warriors this season, his first with the team. He signed a one-year, $12.8 million deal with the team this past offseason after he ...
PALERMO — One of the two kindergarteners injured in a Northern California school shooting in early December may not regain the use of his legs, the family told CBS Sacramento on Thursday. The ...
The amount of mercury in a fluorescent lamp varies from 3 to 46 mg, depending on lamp size and age. [4] Newer lamps contain less mercury and the 3–4 mg versions are sold as low-mercury types. A typical 2006-era 4 ft (122 cm) T-12 fluorescent lamp (i.e. F34T12) contains about 5 milligrams of mercury. [5]
Donald Trump's nominee for attorney general, former Rep. Matt Gaetz, allegedly paid for two women in 2019 to travel to New York to have sex, watch his appearance on Fox News, and attend the ...