Page 7 - Second Ping News Today : Breaking News, Live Updates & Top Stories | Vimarsana

If the former managing director of the the national transportation safety board. thank you for being with us. so this is what we know about what the chinese say they've heard. twice, two times, electronic pulse signals, the second time they heard it, it was two kilometers from the original, and it lasted every second they heard something every second for 90 seconds. what do you make of that? >> i think it's very compelling. and particularly that they picked it up a second time. it's not uncommon that both of the black boxes, the voice recorder and the data recorder, you know, are located near ...

Flight data and voice recorder.r orter: and we don't have a lot of time, wolf. and that's exactly what we wanted to show here today. the difference between hydrophones and also taking a look at s.o.n.a.r. they're different and do different things. i want to introduce you to james coleman, senior hydrographer. i keep saying that wrong. he's going to show you how this works. break it down for us and show how this hydrophone works. >> that under water locater beacon is sending out sound, these pings. and to pick it up, you need a hydrophone, which put simply is an underwater microphone. this is o...