michael kors black Friday They also found the gigantic shock wave that pummeled the town of Chelyabinsk was probably generated once the asteroid was at a height of 24 30 km higher than the ground, after the 20 or so big pieces were rapidly disintegrating. I'd been surprised to learn that the overpressure, the excess pressure generated by blast wave, was just about 3% above sea level air pressure! But that was enough to shatter windows and cause glass to fly everywhere. Too much pressure over a zone the size of a window makes for a decent force, clearly, specifically when applied suddenly..
michael kors black Friday
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