Re: Earthquake photos


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Posted by David Sherman [24.32.202.83] on Thursday, March 04, 2010 at 13:03:18 :

In Reply to: Re: Earthquake photos posted by Jerry in Idaho [64.139.238.43] on Thursday, March 04, 2010 at 12:30:35 :

I have seen it in pictures from other bad earthquakes too, and other pictures from Chile. I would think a car would tend to land right-side up both because the bottom is heavier than the top and because it started out right-side up when the bridge fell out from under it. Plus, the car should be falling no faster than the bridge under it, so it's not like the car can tumble in the air on the way down. But why do dead bugs end up on their backs?

The only theory I can come up with is that the tires and springs are bouncy and the top is not, so as long as the car is on its wheels, the shaking will make it jump and bounce all over the place, but if it happens to bounce enough to end up on its top, then there's no springiness left to make it bounce any more and so it just sits there bouncing around on its top and giving the occupants really bad headaches.

What we need is either a surveillance video that happens to catch it while it happens, or for somebody to take a car and put it on one of those massive shaker tables like they have in Japan for testing buildings, and shake it around and see what happens.

Maybe the lesson, if you're in a vehicle on a bridge in an earthquake is "get out of the vehicle and don't try to ride it out (or ride it down)"



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