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I like the over the horizon radar concept though, plausible.
Originally posted by deckdel
reply to post by Phage
Hmm... Barium seems to have to do with radar things after all
books.google.se...
www.dtic.mil...
Backscatter cross sections of 104 km2 were found at early times for two of the releases, whereas photographs indicate cloud sizes were less than 102 km 2 . The echo amplitudes observed at Homer (line-of-sight 725-km range and 5 off-perpendicular from magnetic field at cloud) were 10 to 15 dB less than those at Kodiak (925 km and 30).
Now this turns out to be interesting
Originally posted by deckdel
reply to post by Aloysius the Gaul
ON THE OTHER HAND, the Navy patented distribution system (for jets) is intended even for other purposes (creating thin filaments - there are Nasa studies on those). The intended purposes are outlined in the patent itself.
The present invention relates to method and apparatus for contrail generation and the like. An earlier known method in use for contrail generation involves oil smoke trails produced by injecting liquid oil directly into the hot jet exhaust of an aircraft target vehicle. The oil vaporizes and recondenses being the aircraft producing a brilliant white trail. Oil smoke trail production requires a minimum of equipment; and, the material is low in cost and readily available. However, oil smoke requires a heat source to vaporize the liquid oil and not all aircraft target vehicles, notably towed targets, have such a heat source. Also, at altitudes above about 25,000 feet oil smoke visibility degrades rapidly.
Originally posted by deckdel
reply to post by Phage
However, we cannot control Sun. If we can control how to "pump up" the ionosphere locally with a plasma shield - then we can achieve similar effects, if not even better.