lead-chamber crystals

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• Gay-Lussac , Joseph-Louis — (1778–1850) French chemist and physicist Gay Lussac was the son of a judge who was later imprisoned during the French Revolution. Born at St. Léonard in France, he entered the recently founded Ecole Polytechnique in 1797 and graduated in 1800.… …   Scientists

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

• steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …   Universalium