Bottom Emitting News Today

Ill bring you an example that we can talk about. passive sonar is the idea of pinger listener. its device that is towed behind the ship and its listening passively to the sound of the flight data recorders. and it has to be within a mile of two of hearing them. if it does, it can be a sense whereof the plane might be. very slow process. the ships not moving fast at all. beyond that, theres the question of active sonar and that involves a robot. essentially if we drive below the water here, we ca...