Word: supergadget
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Beam That Sees. An electronic supergadget which "sees" as well in the dark as in the light, radar projects a radio beam which, on striking an object near or far, returns an echo that is translated into a visual image on the radar screen. Radar can see the flight of a shell, the wake of a ship, the explosion of a target, the fall of a hit plane. At sea, it can detect buoys, reefs and other ships more than 20 miles away...
...radar's toughest identification problems-and one of the most fascinating sidelights on the great supergadget-was how to tell whether detected planes or ships were friendly or hostile. It was solved by an ingenious instrument called I.F.F. ("Identification, Friend or Foe"). When an I.F.F.-equipped plane is hit by a friendly radar beam, the instrument automatically flashes back a coded identifying signal...
| 1 |