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| subject: | Relative Humidity |
"Miles Maxted" bravely wrote to "All" (12 Jul 04 05:16:02) --- on the heady topic of "Relative Humidity" MM> G'morning all, MM> Please tell me how long this thread on relative humidity has been MM> running ? On what date did it start running ? MM> Things have been quiet at this end of Fido until I copped some 7 MM> messages yesterday from what was obvious an ongoing thread ! MM> This morning, there are even more messages - making it clear I've MM> missed a whole portion of this and probably other threads... MM> Blast ! Don't fret, Miles. The threads eventually always come back to humidity. In fact it isn't even really about humidity but rather the methods of measuring it. No one has mentioned it but I think microwaves could be used to measure humidity as the water vapour content of the air alters the impedance and attenuation of a signal. In addition, no one has mentioned the gas chromatograph but there are still so many methods left to explore, for example a high voltage ion wind changes with humidity. etc... But I'd prefer to talk about something I learned of recently concerning the Supermarine Spitfire. Apparently, according to this radio announcer / airplane enthousiast, a tidbit about the Spit was recently declassified which helps explain the great success it had during WWII. Turns out the Spit was equiped with a radar receiver. I was a bit surprised by this news but in looking at a picture of a cockpit interior I do see a largish circle which could have held a round CRT but missing in the picture. I had always assumed it was some navigation equipment that went there but not a CRT! There were a lot of secrets even in WWII. M*i*k*e ... "All men are ignorant, just in different fields" - Einstein --- Blue Wave/DOS v2.30* Origin: Juxtaposition BBS, Telnet:juxtaposition.dynip.com (1:167/133) SEEN-BY: 633/267 270 @PATH: 167/133 379/1 396/45 106/2000 633/267 |
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