INCOMING!: метеорита в Челябинске, Russian Meteor - February 2013 |
INCOMING!: метеорита в Челябинске, Russian Meteor - February 2013 |
Feb 15 2013, 07:01 AM
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Looks like a small meteoroid decided to spoil 2012 DA14's big day by exploding over Russia...
http://zyalt.livejournal.com/722930.html?nojs=1 -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
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Feb 16 2013, 03:14 AM
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Senior Member Group: Members Posts: 3008 Joined: 30-October 04 Member No.: 105 |
QUOTE I don't know how it's today, but in earlier times (20th century), lots of Soviet windows frames had very low quality. Another thing. Blast wave is a wave. So it interferes and it's possible that some windows damage was caused by a local overpressure event, which can be result of superposition of waves. In my work as a hydrogeologist I had occasions to dabble in the (mining) blast effects on structures. One suggestion we saw was that in a tightly sealed building the walls (and windows) would flex more than if the building were not well-sealed in response to an overpressure event. It is Winter and even in a rural area urethane foam weatherstripping is available. Yes, blast waves can be reflected and interfere constructively or destructively. Take a look at Don Davis' famous painting of the Tunguska event-- it shows blast waves reflecting. And the effects of a blast wave from an atomic explosion reflected off the ground are documented-- see Richard Rhodes' books on the making of the atom bomb. --Bill -------------------- |
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