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  Semiconductor
One of the fundamental concepts in electronics is conduction. Different materials conduct an electrical current in as many diverse ways. One example of a good conductor is a metal, such as gold or copper. An example of a bad conductor is glass or an item made of wood. These bad conductors are called insulators. A semiconducting material has conducting properties between these good/bad conductors. It is called a semiconductor, an intermediate between a conductor and an insulator.
 
     
   
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MLA style: "The Transistor". Nobelprize.org. Nobel Media AB 2014. Web. 22 Oct 2014. <http://www.nobelprize.org/educational/physics/transistor/function/semiconductor.html>

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