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Aerolux Light Corporation was a manufacturer of artful gas-discharge light bulbs from the 1930s through the 1970s. [1] Aerolux made these bulbs in a factory in New York City . US Patents dating back to the 1930s describe the design and construction of these bulbs.
An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires ...
In present-day Japan, plastic chōchin with electric bulbs are produced as novelties, souvenirs, and for matsuri and events. [9] The earliest record of a chōchin dates to 1085, [8] and one appears in a 1536 illustration. The akachōchin, or red lantern, marks an izakaya. [10] In Japanese folklore, the chochin appears as a yōkai, the chōchin ...
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From circa 1940 in US and UK wartime communication, "Roger" came to represent "R" when spelling out a word. "R" is the first letter in "received", used to acknowledge understanding a message. "R" is the first letter in "received", used to acknowledge understanding a message.
An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the ...
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The most commonly used A-series light bulb type is an A60 bulb [7] (or its inch-based equivalent, the A19 bulb [2] [4]), which is 60 mm (19 ⁄ 8 in or 2 + 3 ⁄ 8 in) wide at its widest point [3] and approximately 110 mm (4 + 3 ⁄ 8 in) in length. [8] Other sizes with a data sheet in IEC 60064 are A50, A55, A67, A68, A71, A75, and A80.