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... do they spin their tails? :-)

Well, cats aren't uniform so their bodies have a moment of inertia around a point that's not directly at their center, this means that by pulling their legs in (i.e. increasing density) they can turn...

A spectrum analysis of the light from the star (i.e. redshift) can determine how long the light took to get from the star to Earth, and since the speed of light is a known constant (3^8 meters/sec.)...

Could also be the differential motion between the sun's equator and poles. Because the sun is plasma it doesn't rotate uniformly so the equator rotates faster than the poles. This differential...

I realize that this is a very specific question but can anyone tell me if the intervals between arrivals in a markovian system approach an average? And if so, does that average correspond in some...