Light - S1.E24 - Crash Course Astronomy
In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to analyze those colors and determine an object’s temperature, density, spin, motion, and chemical composition.
Light - S1.E24 - Crash Course Astronomy
July 9, 2015
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