“Galileo got it wrong. The Earth does not revolve around the Sun. It revolves around you and has been doing so for decades. At least, this is the model you are using.” –Srikumar Rao It’s the end of the week, so that means its time to take on another one of your questions from the … Read moreAsk Ethan #9: Why everything rotates
“As seismologists gained more experience from earthquake records, it became obvious that the problem could not be reduced to a single peak acceleration. In fact, a full frequency of vibrations occurs.” –Charles Francis Richter You’ve all been around long enough to be familiar with the severe damage that earthquakes can cause, rattling and cracking the … Read moreWhere does an earthquake's energy come from?