A single electron makes the difference between “on” and “off” for a new transistor made from a single carbon nanotube, whose minute size and low-energy requirements should make it an ideal device for ...

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In this lesson, students build two circuits and explore how transistors function. When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object . . .

We like to pretend that our circuit elements are perfect because, honestly, it makes life easier and it often doesn’t matter much in practice. For a normal design, the fact that a foot of wire has a ...