Beryllium is the only stable light metal with a relativly high melting point.
These properties coupled with its excellent electrical conductivity, high heat capacity and conductivity, good mechanical properties at elevated temperatures, oxidation resistance and a very high modulus of elasity making it of use for structural and thermal applications such as windows for X ray tubes where the metal is evaporated on to glass to form a mirror for ultraviolet light. CS gas is an irritant gas that affects vision and respiration. It was synthesized by Corson and Stoughton in 1928 and is used in riot control. Hawley's Condensed Chemical Dictionary 11th Edition. Electronic space created by a computer network which the user can explore at will.