speed light
41speed — speed1 W1S2 [spi:d] n ▬▬▬▬▬▬▬ 1¦(of movement)¦ 2¦(of action)¦ 3¦(fast)¦ 4¦(photography)¦ 5¦(drug)¦ 6 five speed/ten speed etc 7 up to speed ▬▬▬▬▬▬▬ [: Old English; Origin: sped success, quickness ] …
42Speed limit — For a discussion of the maximum speed possible in the universe, see speed of light and special relativity. A road speed limit is the maximum speed allowed by law for road vehicles. Speed limits are commonly set and enforced by the legislative… …
43Light echo — A light echo is a phenomenon observed in astronomy. Analogous to an echo of sound, a light echo is produced when a sudden flash or burst of light, such as that observed in novae, is reflected off a source and arrives at the viewer some time after …
44speed of light — ▪ physics speed at which light waves propagate through different materials. In particular, the value for the speed of light in a vacuum is now defined as exactly 299,792,458 metres per second. The speed of light is considered a… …
45Light value — NOTOC In photography, light value has been used to refer to a ldquo;light level rdquo; for either incident or reflected light, often on a base 2 logarithmic scale.The term does not derive from a published standard, and has had severaldifferent… …
46speed — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ amazing, astonishing, breakneck, fast, good, great, high, incredible, lightning, phenomenal …
47Speed of Sound (song) — Single infobox Name = Speed of Sound Artist = Coldplay Album = X Y B side = Things I Don t Understand Proof Released = 26 April 2005 (U.S.) 23 May 2005 Format = 7 , CD, 10 , 12 Genre = Alternative rock Length = 4:49 Label = Parlophone Producer =… …
48speed — speed1 [ spid ] noun *** 1. ) count or uncount movement that is very fast: The main advantage of this bike is its speed. a ) the rate at which something moves: speed of: The device measures the speed and direction of the wind. top speed (=the… …
49speed — I UK [spiːd] / US [spɪd] noun Word forms speed : singular speed plural speeds *** 1) [countable/uncountable] the rate at which someone or something moves speed of: The device measures the speed and direction of the wind. top speed (= the fastest… …
50Light rail in North America — The term light rail was coined in 1972 by the U.S. Urban Mass Transit Association (UMTA) to describe new streetcar transformations which were taking place in Europe and the United States. The Germans used the term stadtbahn to describe the… …
