Comments
Nowadays, this is called "passive sonar". There is no pinger -- you just listen to the sounds the target makes. In "active sonar", the pinger can give away your own position to the enemy.
Posted by Joshua Zev Levin, Ph.D. on 05/24/17 at 09:40 AM
It is innovative for an era without electronics. I'd bet the approach to interpreting sounds remains similar.
Posted by KDP on 05/24/17 at 03:03 PM
I thought the microphones in the 'lenses' were plants. So I figured it was an indoor marijuana garden, and he was talking to them, to coax them to grow big.
Posted by Virtual on 05/24/17 at 06:50 PM
I was thinking the tubes had something to do with breathing. An impressive invention.
Posted by TheCannyScot on 05/25/17 at 09:31 AM
I thought it was something inside a submarine.
I still can't figure why they need the bellows hanging on the wall.
I still can't figure why they need the bellows hanging on the wall.
Posted by Phideaux on 05/25/17 at 12:58 PM
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Category: Technology | 1910s