Compression Wave News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Sound needs matter to propagate, so the vast vacuum of space is not just empty − it’s silent.

A quick sand. >> this would last four minutes or more, the rattling and shaking and then within 15 minutes the wall of water and the entire zone you could have water up to 100 feet high. >> right, in that zone we have 70,000 people that have no clue as to what could happen. you know in japan, you have to live with earthquakes every day. children go through tests. and drills and people are conscious of this. but, in the pacific northwest, it's barely it barely rates on the radar screen. >> there's something that happens before the shaking that we can sense. that we can pick up. that is an early...

Prevent any additional breaking or anything like that going on. and bullet trains are literally stopped in their tracks. where they are. whether out in the open country or maybe even a tunnel. they will stop those bullet trains, because they think that will be a safer situation if that thing kept on going. how does it work? basically there's millions and thousands of little sensors all over the place in japan. and they're also on ocean floor and they detect any kind of movement in the earth's crust. now when an earthquake occurs, there are two different types of waves, p waves and s waves. the...