zirconium stars

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• Zirconium — (pronEng|zɚˈkoʊniəm, IPA|/ˌzɝˈkoʊniəm/) is a chemical element with the symbol Zr and atomic number 40. It is a lustrous, gray white, strong transition metal that resembles titanium. Zirconium is used as an alloying agent due to its high… …   Wikipedia

• zirconium — zirconic /zerr kon ik/, adj. /zerr koh nee euhm/, n. Chem. a metallic element found combined in zircon, baddeleyite, etc., resembling titanium chemically: used in steel metallurgy, as a scavenger, as a refractory, and as an opacifier in vitreous… …   Universalium

• chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

• Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium

• Neutron capture — Science with Neutrons Foundations Neutron temperature Flux · Radiation  …   Wikipedia

• Commemorative coins of Poland: 2001 — Main article: Commemorative coins of Poland Poland has a rich selection of Gold and Silver commemorative coins.In the year 2001 coins were launched in the series: Monuments of Material Culture in Poland , Polish kings and princes , The Animals of …   Wikipedia

• Pyrotechnic composition — A pyrotechnic composition is a substance or mixture of substances designed to produce an effect by heat, light, sound, gas or smoke or a combination of these, as a result of non detonative self sustaining exothermic chemical reactions.… …   Wikipedia

• Barium star — Barium stars are G to K class giants, whose spectra indicate an overabundance of s process elements by the presence of singly ionized barium, Ba II, at λ 455.4nm. Barium stars also show enhanced spectral features of carbon, the bands of the… …   Wikipedia

• Étoile à baryum — Une étoile à baryum est une géante rouge de type spectral G ou K dont le spectre indique une surabondance d éléments chimiques issus du processus S à travers la présence de la raie Ba II à λ = 455,4 nm du baryum ionisé une fois Ba+. Ces… …   Wikipédia en Français

• Titanium — This article is about the chemical element. For other uses, see Titanium (disambiguation). scandium ← titanium → vanadium …   Wikipedia