Posted by: amygdala | May 9, 2009

speed of light vs. seismic waves

…He told of being in the Twitter offices in San Francisco on March 30, when the Twitter engineers noticed that the word “earthquake” had suddenly started trending up. They didn’t know where the earthquake was.

Several seconds later, their building started to shake. The earthquake had been in Morgan Hill, 60 miles south of San Francisco, and the tweets about the shaker reached the office faster than the seismic waves themselves.

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