..... Stumper Index
Stumper #3.
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[i.e. your Knowledge Quotient]

- about Shockley's Sandwich -


William Shockley was working at the Murray Hill Bell Telephone Laboratories in New Jersey when, on December 23, 1947, his research team, using two small wires attached to one side of a germanium crystal (a semiconducting material), demonstrated that such a device could be used to amplify sound.

The following year, Shockley constructed and patented a device with similar properties using three thin slices of semiconductor material sandwiched together. The new device was used commercially for the first time in 1953 in hearing aids, and in 1954 was used in radios. Shockley's device is one of the most versatile electronic components and was instrumental in the development of personal computers.

When the invention was first demonstrated in 1947 the name "amplister" was considered but discarded. By what name do we know it today?



Reference: Slater, Robert; Portraits in Silicon (MIT Press, Cambridge, Massachusetts, 1989 paperback )

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