{"version":1,"type":"rich","provider_name":"Libsyn","provider_url":"https:\/\/www.libsyn.com","height":90,"width":600,"title":"Astronomy Cast Ep.139: Energy Levels &amp; Spectra","description":"http:\/\/www.astronomycast.com\/archive\/ From May 25, 2009. Last week (May 18, 2009) we took a peek into the tiny world of quantum mechanics, and its unintuitive, but very accurate mathematical predictions. And although we all appreciate the physics lesson, you\u2019re probably wondering what this all has to do with astronomy. Well, today we bring it all home and explain how quantum mechanics has given astronomers one of the most powerful tools they have to study the nature of the cosmos. &amp;nbsp; Spectra \u2014 an excellent overview by James B. Kaler Doppler Shift \u2014 UCLA Continuum Radiation \u2014 Physics Myths The sun is green!&amp;nbsp;From  The Color of the Sun \u2014 Scientific Blogging Blackbody radiation \u2014 GSU Elemental composition of the Sun \u2014 About.com Deuterium \u2014 Wiki Grism is a combination of a prism and grating to create a dispersed spectrum. Spectroscopy and Astronomy \u2014 UCLA  Slit Spectroscopy \u2014 Gemini Telescope Balmer Series \u2014 Internet Encyclopedia of Science Hydrogen Alpha Explained \u2014 Solar Observing (H-alpha spectral line is at 656.3 nanometers)  Using Laser Combs to Find Exoplanets \u2013\u2013 Universe Today  Hydrogen Spin Flip Transition \u2014 Wolfram  Zeeman Spectral Line Splitting \u2014 NOAO [These are very old links, so some may be dead\u2026 Rich] &amp;nbsp; We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.&amp;nbsp; Just visit: https:\/\/www.patreon.com\/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!&amp;nbsp; Every bit helps! Thank you! ------------------------------------ Do go visit http:\/\/www.redbubble.com\/people\/CosmoQuestX\/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http:\/\/cosmoquest.org\/Donate This show is made possible through your donations.&amp;nbsp; Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http:\/\/www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org. ","author_name":"The 365 Days of Astronomy","author_url":"http:\/\/www.365DaysOfAstronomy.org\/","html":"<iframe title=\"Libsyn Player\" style=\"border: none\" src=\"\/\/html5-player.libsyn.com\/embed\/episode\/id\/41410620\/height\/90\/theme\/custom\/thumbnail\/yes\/direction\/forward\/render-playlist\/no\/custom-color\/88AA3C\/\" height=\"90\" width=\"600\" scrolling=\"no\"  allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen><\/iframe>","thumbnail_url":"https:\/\/assets.libsyn.com\/secure\/content\/202269335"}