Light: Crash Course Astronomy #24
Episode 24 | 10m 33s
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 objectÕs temperature, density, spin, motion, and chemical composition.
Aired: 02/02/16
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