CNN CNN Newsroom April 8, 2014 18:09:00
Bend, sort of making this even more difficult to trace. >> that's correct. bend quite dramatically. the effect of temperature, pressure will have an effect on the velocity of sound as it travels through the water. and this will cause the ray path, the direction in which the sound is traveling to actually bend sort of like looking at a pencil in half a glass of water. the same sort of refraction that occurs there. so it can be very difficult to localize. >> if they localize it, if based upon this third line of positioning they hope to attain in triangulation, they nail it, this is the ping from...
Source: archive.org