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The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
History of street lighting in the United States; Light pollution – Excess artificial light in an environment; List of light sources – Devices and processes that produce light; Mercury-vapor lamp – Light source using an electric arc through mercury vapor; Metal-halide lamp – Type of lamp; Neon lamp – Light source based on gas discharge
Prior to 1926, the U.S. Army used LB-and HB-prefixes, signifying 'Light Bomber' and 'Heavy Bomber'. The first XB-1, called the Super-Cyclops by Huff-Daland, [1] was an extension of the earlier Huff-Daland XHB-1 'Cyclops'. It was essentially the same in size, but sported a twin tail and twin engines.
For comparison, a conventional incandescent light bulb of 60–100 watts emits around 15 lm/W, and standard fluorescent lights emit up to 100 lm/W. As of 2012 [update] , Philips had achieved the following efficacies for each color. [ 8 ]
A first century AD head of a Cyclops from the Roman Colosseum. In Greek mythology and later Roman mythology, the Cyclopes (/ s aɪ ˈ k l oʊ p iː z / sy-KLOH-peez; Greek: Κύκλωπες, Kýklōpes, "Circle-eyes" or "Round-eyes"; [1] singular Cyclops / ˈ s aɪ k l ɒ p s / SY-klops; Κύκλωψ, Kýklōps) are giant one-eyed creatures. [2]