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Beryllium - lab grade ultra precision density-standard cube 1cm3 -
10.0 x 10.0 x10.0mm - purity 99.9%
Made in Austria
Pure European product! Don\'t compare with cheap chinese copies.
Beryllium - Precision density-standard cube 1cm3 NEW!Highly polished finish, laser engraved. Using finest materials, each density cube was lapped to 10x10x10mmby a mechanical engineering company with an accuracy of0.01 millimeter.Eachoneseparately ground and polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface.
Altogether 36 elements are available in a complete set in a wooden case (available separately).
Discovered in 1797 by N.L. Vauquelin in Paris, but not extracted until 1828 by Wöhler (Berlin) and A.A.B. Bussy (Paris).Beryllium is a light and lustrous metal which is obtained by the electrolysis of a fused halide (e.g. BeCl2). It is resistant to attack by air or water, even at elevated temperatures (red heat). Beryllium is non-magnetic, is a good thermal conductor and is used as an alloying addition to copper or nickel, the alloys having excellent thermal, mechanical and electrical properties; in addition, when alloyed with nickel, the resultant Be/Ni alloy has the highest coefficient for secondary electron emission (12.3). Applications for pure beryllium include its use as windows in X-ray tubes and as a source of neutrons when bombarded with alpha particles, a technique used by Chadwick in 1932 in their discovery. Beryllium and its compounds are highly toxic, inhalation of the dust resulting in berylliosis, an inflammation of the lungs.Source: ©Goodfellow.com
