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prepared by electrolysis of fused calcium chloride to which a little calcium fluoride has been added. it is used in alloys with other metals, such as aluminum, lead, or copper; in preparation of other metals, such as thorium and uranium, by reduction; and (like barium) in the manufacture of vacuum tubes
construction since antiquity. chemists considered lime to be an element as recently as the end of the th century, but in a. lavoisier suggested that lime, magnesia, baryta, alumina, and silica are compound materials. h. davy electro-lyzed a mixture of moist slaked lime and mercuric oxide in using a mercury cathode...
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