Light: Crash Course Astronomy #24

From the creator

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. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster -- Chapters: Introduction 00:00 Light is a Wave 0:31 Electromagnetic Spectrum 1:32 How is Light Made? 3:19 Atomic Structure 4:47 Spectroscopy 7:14 Redshift vs Blueshift 8:26 Review 9:50 -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse -- PHOTOS/VIDEOS Wavelengths http://imagine.gsfc.nasa.gov/educators/gammaraybursts/starchild/Image6.gif [credit: Imagine the Universe! / NASA] Observatories across spectrum http://imagine.gsfc.nasa.gov/Images/science/observatories_across_spectrum_full.jpg [credit: Imagine the Universe! / NASA] Red hot spiral hotplate http://freefoodphotos.com/imagelibrary/cooking/slides/hot_electric_cooker.html [credit: freefoodphotos.com] The Crab Nebula http://en.wikipedia.org/wiki/Nebula#/media/File:Crab_N

Published 2015-07-09 · Watch on YouTube ↗
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