Transistorized from – PBS Online – Tutor
The Invention of the First Transistor, On November 17, 1947, Walter Brattain dumped his whole experiment into a thermos of water. The silicon contraption he’d built was supposed to help him study how electrons acted on the surface of a semiconductor — and why whatever they were doing made it impossible to build an amplifier. But condensation kept forming on the silicon and messing up the experiment……….
Transistorized from – PBS Online – Tutor
Lesson 2: Scientists at Work – Students select an electronic invention and research who and what contributed to it.
Lesson 4: Using Transistors – Students build circuits to see how transistors function as switches or amplifiers


