Word: sferic
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Army used what it called "Sferic" - Static Direction Finder - a device developed in Florida and combat-tested in the storm-ridden Pacific theater. Sferic employs a radar-like directional antenna (two mutually perpendicular receiving loops) and cathode-ray tube. Certain types of storms are accompanied by severe electrical disturbances, familiar to every radio listener as the crashing static that accompanies a thunderstorm...
...Sferic's antenna, revolving like a non stop merry-go-round, seeks out these static signals and relays them to the weatherman as straight-line flashes on the face of the cathode-ray tube. The angular positions of the flashes indicate the di rection the storm is taking. A network of stations taking simultaneous observations of the same flashes can locate their source and spot a storm position in a 2,000-mile radius. One drawback: not all storms stir up enough static...
| 1 |