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#2994 07/31/01 10:20 PM
Joined: Dec 2000
Posts: 4,291
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Does anybody know when photocells came into common usage?? Subject came up when we were discussing a building that the guys said must be as old as I am (they really rub it in, those whippersnappers)

#2995 07/31/01 10:51 PM
A
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They were not a familiar thing in until the late 1960s in my part of the country.

This website seems to confirm a mid-1950s time frame for the invention: http://www.eskimo.com/~jrterry/photocontrols.html

#2996 08/01/01 06:25 PM
Joined: Dec 2000
Posts: 4,291
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Thanks, DSpark!
This is about the time frame I thought. I had to come in as a kid when the street lights went on, I can remember them coming on 1 by 1.
(although I'm not yet 50, these guys lay it on thick! Carriages, Flint & Steel lighting Gaslamps. All in fun)


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