germanium
Noun
Meaning
A rare element, recently discovered (1885), in a silver ore (argyrodite) at Freiberg. It is a brittle, silver-white metal, chemically intermediate between the metals and nonmetals, resembles tin, and is in general identical with the predicted ekasilicon. Symbol Ge. Atomic weight 72.3.
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Examples
After neutralization, only the zinc stays in solution while germanium and other metals precipitate.
After much experimentation, they found that there was simply no way the germanium -based transistors could be run much faster than those used in the 1604.
Another source of germanium is fly ash of power plants fueled from coal deposits that contain germanium.
Brattain reported: "Using this double point contact, contact was made to a germanium surface that had been anodized to 90 volts, electrolyte washed off in H2O and then had some gold spots evaporated on it.
A whisker-like wire is placed lightly in contact with a solid crystal (such as a germanium crystal) in order to detect a radio signal by the contact junction effect.
Because it seldom appears in high concentration, germanium was discovered comparatively late in the history of chemistry.