Acoustic location
04/18/2005 @ 4:00 pm
Before the invention of radar, large dishes or horns were used in attempt to pick up sounds of the enemy for tracking purposes These acoustic locators or sound mirrors were used from mid-WW-I to the early years of WW-II for the passive detection of aircraft engine noise.
For an interesting overview of acoustic locator and sound mirror technology of old, click here.
l need sme 1 in nottingham who has a studio l wann becme fam 
perfeckt 10:10
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I’d love to have one of those things in my back yard. (I’d love to have a backyard, too.)
April 18th, 2005 at 10:20 pm