I think it was 1967, while working at a 3rd & > echelon maintenance facility repairing and refurbishing ARC34 and TRAC75 military aircraft radios, when a memo came down from the DOD stating that all specifications and recorded data related to frequency will now be given in Hertz. Apparently in honor of Heinrich Rudolf Hertz. I was a junior tech at the time and had no idea who he was. Back then he simply wasn't as well known as Marconi. Two world wars with Germany certainly couldn't have helped either!Yes Bill,
Kinda like changing cps to Hz, it all makes perfect sense
http://www.ideafinder.com/history/inventors/hertz.htm
BTW. Probably not accurate; but when I think of Photocell vs LDR I think of a complete circuit vs the controlling element of it respectively.
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