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  Germanium
Germanium is another semiconductor found in group 14 of the periodic table. It is grey white with a shimmering white luster. In the 1950s germanium was the semiconducting material preferably used in the transistor. It is however, not as abundant as silicon and is therefore rarely used today.
 
     
 
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MLA style: "The Transistor". Nobelprize.org. Nobel Media AB 2014. Web. 26 Oct 2014. <http://www.nobelprize.org/educational/physics/transistor/function/germanium.html>

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