krypton light
11krypton — /ˈkrɪptɒn/ (say kripton) noun an inert monatomic gaseous element present in very small amounts in the atmosphere, of some use in high power, tungsten filament light bulbs. Symbol: Kr; relative atomic mass: 83.80; atomic number: 36. {New Latin,… …
12Laser Light Show (Grand Coulee Dam) — The laser light show at Grand Coulee Dam, which began in 1989, is one of the largest light shows in the U.S.. The 37 minute show runs daily from Memorial Day through September 30. An addition of fireworks lights up the sky above the dam each… …
13spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …
14Noble gas — Group 18 Period 1 2 He 2 …
15Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …
16Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
17Ion laser — An ion laser is a gas laser which uses an ionized gas as its lasing medium. [GoldBookRef|title=ion laser|file=I03219] Like other gas lasers, ion lasers feature a sealed cavity containing the laser medium and mirrors forming a Fabry Perot… …
18Superboy (Kon-El) — Superboy Superboy flies into action. Art by Mike McKone. Publication information Publisher DC Comics First …
19Superman — This article is about the superhero. For other uses, see Superman (disambiguation). Superman …
20Superman (film) — Superman Theatrical release poster by Bob Peak Directed by Richard Donner Produced by …
