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Originally Posted by Kapitain
if sonar is designed to listen then thats what it does sound travels faster than light in water due to the closeness of molocules hence why the speed to sound equasion does not work in water or space.
if you get a glass and put it in the water and put your ear to it you can hear a ship miles away, and the guy who said that lived almost 150 years ago so if he can hear a ship with a glass im dam sure a sonar can hear a ship a hundred miles away
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Light travels faster than sound, even in water, but not as far.
Also, please explain what the "speed to sound equasion" is, and... well... how do I put this... more or less why something not true at all affects it?
As for the leonardo quote (I believe it was him) I don't think the 100 miles is accurate, more than as "far away" "over the horizon" or... well, you get the picture. And even he certainly had little clue of how sound works in water, compared to what sonar operators do today.