Chile’s earthquake has shifted the rotation of the earth

From the Washington Post:

Richard Gross, a scientist at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., and colleagues calculated that Saturday’s quake shortened the day by 1.26 microseconds. A microsecond is one-millionth of a second.

Hat tip to FP.

This reminds me of a question I’ve never heard asked: What would happen if the Chinese government asked everyone in the country to jump up and down at the same time, and they listened?

And why do I think Tyler Cowen could tell me the answer?

Finally: yes, I am aware that DSM-V probably has a name for people like me.

Update: Wow. Tyler Cowen answers in under 20 minutes. More proof of my nagging suspicion: he is actually triplets masquerading  as a single man. Why didn’t I do that?