Who invented the tungsten wire?
The word “Tungsten” was probably first used by A. F. Cronstedt in 1755, who applied it to the mineral subsequently known as “scheelite,” which is the natural form of calcium tungstate. C. C. Leonhard named this mineral scheelite in 1821 in recognition of the discovery made by K. W. Scheele, in 1781, that the mineral was a compound of lime with a previously unknown acid, which he called “Tungstic Acid,” a name by which it is still known. Before Scheele made his discovery, the mineral was generally regarded as containing tin. The word tungsten denotes a substance of high density and is derived from the Swedish language, “tung,” meaning heavy, and “sten,” meaning stone. In 1783 the Spanish brothers, J. J. and F. d’Elhujar, published the results of their investigations on wolframite carried out with the Swede, T. Bergmann, while they were working in his laboratory. They showed that this mineral contained the same tungstic acid, previously found in scheelite, but combined with iron and mang
