How Do Submarines Communicate Underwater?

1위@LegendaryInfortainmenthace 1 día (editado)

They use a spread spectrum sonar communications system which is difficult to distinguish from background noise. Call it Gertrude. The AN/WQC-2A which replaced the AN/WQC-2 which was new when I left the fleet is the latest Gertrude of our times I believe. The long wavelength underwater communication system is more secure by far and carries over very long distances, but is exceptionally low bandwidth too.번역 보기

2위@jonwhite2706hace 2 días

maybe do a video or how long did it take a couple of miners to start a cave and dig out lets say 12 feet , before mining drills , and how much faster with a drill번역 보기

3위@johnmellar1656hace 1 día (editado)

Use fish carrying informataion coded on microchips and train them like carrier pigeons (ctopuses, although slower are intelligent and trainable)번역 보기