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germanium (Ge)

germanium diode ELETTR

germanium transistor ELETTR

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The year of 1933 was prominent for discovering a deposit of polimetals such as lead, zinc, silver, cadmium and germanium.
en.wikipedia.org
Bismuth germanium oxide is used in detectors in particle physics, aerospace physics, nuclear medicine, geology exploration, and other industries.
en.wikipedia.org
Classification is based on diagrams in which the nickel content of meteoric iron is plotted against certain trace elements (e.g. gallium, germanium and iridium).
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An argon atmosphere is also used for growing crystals of silicon and germanium.
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The modern methods of scanning found high concentrations of cobalt, phosphorous and germanium; these elements were present at levels that only occur in iron meteorites.
www.jewellermagazine.com
For example, germanium was called ekasilicon until its discovery in 1886, and rhenium was called dvi-manganese before its discovery in 1926.
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There are some germanium ores, such as germanite, but these are not mined on account of being rare.
en.wikipedia.org
Germanium can interfere with such enzymes as lactate and alcohol dehydrogenase.
en.wikipedia.org
The circuit relied on the germanium diode having a lower forward voltage drop than a silicon diode would have.
en.wikipedia.org
Another source of germanium is fly ash of coal power plants which use coal from certain coal deposits with a large concentration of germanium.
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