you are not alone in being confused about tempering. and i've spoken about it in detail and at length. but my self-imposed goal is to pass along information and teach and if you don't get it, regardless of how much i've written, then i've not done my job fully. to that end i'm going to review as many...
have a suitable furnace to reduce the oxide to the metal. tungsten was finally isolated by brothers fausto and juan jose de elhuyar in , in spain, by reduction of acidified wolframite with charcoal. w tungsten properties a very hard, dense, silvery-white, lustrous metal. tarnishes in air, forming a...
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