December 16, 1947 — William Shockley, John Bardeen and Walter Brattain build the first practical point-contact transistor. The group had been working together on experiments and theories of electric field effects in solid state materials, with the aim of replacing vacuum tubes with a smaller, less power-consuming device. They would eventually share the Nobel Prize in Physics in 1956.

  6 comments for “This Day in History

  1. December 16, 2018 at 6:44 AM

    How far we have come in so short a time. I trained on, and built valve devices, learning to wire my own resistors based on gauge of wire, number of turns etc. and my head is still jam packed full of all the formulae!

    Liked by 1 person

  2. December 16, 2018 at 6:37 AM

    This is especially interesting for someone born in 1946. I grew up going to the hardware store with my dad to test the tubes from our radio or television, and I had an uncle who worked for Motorola. His basement was full of tubes and transitors: the mix a sign of a time of transition.


    • December 16, 2018 at 2:47 PM

      When I was a kid in south Florida the 7-11s had tube testing machines in the front of the store between the in & out doors. Fun times.


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