Posted by Lee Petersen | August 6, 2020
Reflection of Light

The relation that the angle of incidence is equal to the angle of reflection combined with the observation that the normal direction, incident, and reflected rays lie in the same...

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Light Pillars
Posted by Lee Petersen | April 29, 2020
Light Pillars

A light pillar display over Fairbanks on a very cold January evening in Fairbanks, Alaska. This photo was taken from the University of Alaska near the Geophysical Institute. Typically the...

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