Thursday, April 15, 2010

The Earth's jolt(to make something move suddenly and roughly,SYN-jerk)that shortened A Day

how chile's quake could have shortened a day: BBC news

NASA calculates the quake in Chile shifted mass to such an extent that it changed the rotation of the earth to shorten a day by one millionth of a second. Using the same mathematical model, the NASA team estimated the 9.1 Sumatran earthquake in 2004 shortened a day by 6.8 microseconds.

it's been happening since the beginning of time, but NASA doesn't think should affect any biological systems. learn, in colloquial terms, how the quake caused a change in mass distribution at BBC news.

How an earthquake could shorten a day

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