Ask Ethan #9: Why everything rotates

“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

Weekend Diversion: The Master of Illusions

“Illusion is the first of all pleasures.” –Oscar Wilde It’s tough to tell fact from fiction, and sometimes just as hard to tell reality from illusion. As long as you’re enjoying yourself this weekend, I’d have to agree with Buckwheat Zydeco, and say Let The Good Times Roll. But despite what these images you’re looking … Read moreWeekend Diversion: The Master of Illusions

Where does an earthquake's energy come from?

“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?

Measure the Tilt of the Earth on the Solstice! (This Wednesday!)

“Soon the earth will tilt on its axis and begin to dance to the reggae beat to the accompaniment of earthquake. And who can resist the dance of the earthquake, mon?” –Peter Tosh Every year, there are two special days where every place on Earth receives the same amount of sunlight — 12 hours — … Read moreMeasure the Tilt of the Earth on the Solstice! (This Wednesday!)