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Search took 0.00 seconds. Search: Posts Made By: Astrid |
Forum: Navigation 05-08-2014, 15:47 |
Replies: 75
Views: 7,909
Posted By
Astrid
Re: Putting Faith in Electronics
Frankly, I wouldn't trust sound location either now; back in the 19th century and before, it was a viable if imperfect technique, but if you were close enough to hear the sound echo back in fog you... |
Forum: Navigation 05-08-2014, 12:49 |
Replies: 75
Views: 7,909
Posted By
Astrid
Re: Putting Faith in Electronics
Seems like a variation on the old system of sending out a loud sound--horn, whistle, trumpet, or even a voice call, and waiting to hear an echo back. Even in fog, one can project a sound farther than... |
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