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Henry Harrison Chase Dunwoody (October 23, 1842 – January 1, 1933) was an American army officer, businessman, and inventor. Known in his own time for his work with the Army's Weather Bureau, he invented the carborundum radio detector in 1906.
In January 1986 Testors released a model kit of a hypothetical F-19 Stealth Fighter, designed using open source intelligence [6] [7] before the real F-117 Nighthawk was introduced. Although it was very different from the actual plane, [ 8 ] video games and many other toys and models were inspired by this fictional design.
EICO was established in New York City in 1945 by radio repair business owner Harry Ashley to manufacture electronic test equipment in kit form. His first product, advertised in the July 1946 Radio News, was the model 113 VTVM/audible signal tracer. [1]
“These things usually don’t work out,” Trump said, “but she has strong Republican support, and I’m not doing this for me, I’m doing it for them. Let’s see what happens.”
As families desperately scoured the filthy cells of Syria's forbidding Sednaya prison on Monday for any sign of long-detained relatives after its gates were flung open by rebels, hope for finding ...
Specific detectivity is given by =, where is the area of the photosensitive region of the detector, is the bandwidth, and NEP the noise equivalent power in units [W]. It is commonly expressed in Jones units ( c m ⋅ H z / W {\displaystyle cm\cdot {\sqrt {Hz}}/W} ) in honor of Robert Clark Jones who originally defined it.
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Geiger counter is a colloquial name for any hand-held radiation measuring device in civil defense, but most civil defense devices were ion-chamber radiological survey meters capable of measuring only high levels of radiation that would be present after a major nuclear event.