Light 
Light
by Crash Course
Video Lecture 24 of 47
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Views: 665
Date Added: August 11, 2016

Lecture Description

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.

Crash Course Chemistry posters are available at DFTBA.com
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Table of Contents
Light is a Form of Energy 0:39
Wavelength Tells Us Its Energy and Color 0:59
Spectroscopy 7:28

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PHOTOS/VIDEOS
Wavelengths imagine.gsfc.nasa.gov/educators/gammaraybursts/starchild/Image6.gif [credit: Imagine the Universe! / NASA]
Observatories across spectrum imagine.gsfc.nasa.gov/Images/science/observatories_across_spectrum_full.jpg [credit: Imagine the Universe! / NASA]
Red hot spiral hotplate freefoodphotos.com/imagelibrary/cooking/slides/hot_electric_cooker.html [credit: freefoodphotos.com]
The Crab Nebula en.wikipedia.org/wiki/Nebula#/media/File:Crab_Nebula.jpg [credit: NASA, ESA, J. Hester and A. Loll (Arizona State University)]
Building the Space Telescope Imaging Spectograph imgsrc.hubblesite.org/hu/gallery/db/spacecraft/18/formats/18_print.jpg [credit: NASA]
VST images the Lagoon Nebula en.wikipedia.org/wiki/Lagoon_Nebula#/media/File:VST_images_the_Lagoon_Nebula.jpg [credit: ESO/VPHAS+ team]
Jupiter www.nasa.gov/images/content/414987main_pia09339.jpg [credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute]
Venus en.wikipedia.org/wiki/Atmosphere_of_Venus#/media/File:Venuspioneeruv.jpg [credit: NASA - NSSDC Photo Gallery Venus]
Ring Around SN 1987a, image 1 www.spacetelescope.org/images/opo9714e/ [credit: Jason Pun (NOAO) and SINS Collaboration]
Ring Around SN 1987a, image 2 www.spacetelescope.org/images/opo9714a/ [credit: George Sonneborn (GSFC) and NASA/ESA]

Course Index

Course Description

In this Crash Course series, marvel at the wonders of astronomy with your host for this intergalactic adventure, the Bad Astronomer himself -- Phil Plait. In just 40 short lessons, you will learn the basics of the oldest science known to humanity.

Be sure to check out links to relevant Photos in the description for each video.

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