A sun dog, an optical phenomenon from light refraction by ice crystals in the atmosphere, appears March 8 at Rankin Inlet in the Nunavut territory of Canada. Canada’s military is learning Arctic ...

If you studied advanced physics at high school, there's a good chance that you remember Snell's law, which states how a ray of light bends when it crosses a boundary between two media. According to ...

Pink Floyd's Dark Side of the Moon cover, voted the greatest classical rock album of all time, intended to portray the prism and dispersion of light into a rainbow as a certain metaphorical symbolism ...