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About RF Cafe
Copyright: 1996 - 2024 Web BSEE - KB3UON RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived... All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowl My Hobby Website: |
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Cray = Guess
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Cray = Guess A computer model has been devised that improves the ability to forecast whether contrails will be formed behind high altitude jet aircraft. Such a capability would be useful for, among other things, predicting whether strategic military aircraft would likely be visible by eye to enemy forces. Radar and IR stealth doesn't do much good for bombers if their presence is betrayed by contrails. The new model boasts accurately foretelling contrails (but not their duration) on 223 out of 243 aircraft in the study. That means 92% of the time one can expect contrails. Sounds great, but as "Science News" reader John Gilbert points out, "I propose the simplest model: Always predict a contrail. You'll be right 92% of the time." |
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