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What is a photon? Physics of light

By |2018-05-31T11:49:28-07:00August 16th, 2017|Physics|

Photons - Sunshine breaking through the clouds. When did the first photons appear? A photon is a tiny little particle of light, far too small to see individually. All light is made of photons (FOE-tahns). The earliest photons probably appeared about fifteen billion years ago, during the Big Bang. What's the speed of light? Unlike electrons and quarks, [...]

Jean-Paul Sartre – European philosophy

By |2018-04-08T11:14:29-07:00August 7th, 2017|Modern Europe, Philosophy|

Jean-Paul Sartre - a French philosopher After World War I, many people in Europe felt that the old world had ended and a new world was beginning. Jean-Paul Sartre grew up at the beginning of that new world. Sartre's father died of a fever when Sartre was two years old, and his mother [...]