A Mysterious Light on the Darkest Night

It will shine still brighter when night is about you. May it be a light for you in dark places, when all other lights go out. –J.R.R. Tolkien The night sky is no stranger to most of you. Once the Sun goes down in the west, the sky darkens, turning ever-deeper shades of blue until … Read moreA Mysterious Light on the Darkest Night

Centripetal vs. Centrifugal force, & the Solar System

One of the worst teaching tools physicists use (and they almost all do it) is to tell students, There’s no such thing as centrifugal force. What can you do when the top physics education website says, “It is important to note that the centrifugal force does not actually exist. We feel it, because we are … Read moreCentripetal vs. Centrifugal force, & the Solar System