4 ms·
Surely you are thinking of Sonar?
by bbcbasic 11y ago
Surely you are thinking of Sonar?
- nitrogen 11y agoNo, this came up on Hacker News recently: https://news.ycombinator.com/item?id=10810390 https://news.ycombinator.com/item?id=10810390
- matheweis 11y agoGravity for navigation, perhaps ... but I believe they use magnetic fields, not gravitational fields, to detect other subs (and also some rather sophisticated real-time degaussing to prevent said detection): https://news.ycombinator.com/item?id=10979452 https://news.ycombinator.com/item?id=10979452