RobsanX
Sous Chef
OK, give me a minute...
wart did you have some shpere pic up there before? thats what i had seen. and it looked like it had a lightning rod.
air raid sirens
Sorry, 4 hours sleep, all coffeed out .... suffering bad judgement in posting.
All three pics are acoustic gathering devices, what you saw was an acoustic ear used to listen for aircraft during WWII, the second is an acoustic wall used to listen for ships and Zeppelins during World War 1.
I got to thinking the wall was a bit unfair, and the ear way too easy.
I'm like that guy in the commercials...
CANDY BARS!
Candy is sweet...
Sweet, sweet like honey...
Honey comes from bees...
Bees buzz...
Buzz, buzz is a sound...
Sound, sound... ACOUSTIC LOCATORS!
It is somewhat common in Scandinavia, but not so much anywhere else... I doubt you could find one in a store in the U.S.
Of either type, that does the same thing?