wed. Sept. 21/ 2015
wed. Sept. 21/ 2015 Astronomy 1307
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This 2 page Class Notes was uploaded by sashiel pina on Monday September 21, 2015. The Class Notes belongs to Astronomy 1307 at University of Texas at El Paso taught by Hector Noriega-Mendoza in Summer 2015. Since its upload, it has received 41 views. For similar materials see Introductory Astronomy in Astronomy at University of Texas at El Paso.
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Date Created: 09/21/15
A Run Down of class astronomy 1307 September 212015 Today we Talked about electromagnetic spectrum 0 The highest and lowest frequencies 0 Colors visible to the human eye 0 Formula for nding wave length Issac Newton and the prism 0 Light is constant c Photons In short The electromagnetic spectrum consists of the different wave lengths frequencies and colors we can see traviulet shortwave gamma Iiirays rays mfrarati radar T J AM rays rays 1a 1a3912 l j 39 1aquotg 1rr39i I39D a la2 1 1H2 1134 quotII u Waaalaugth meters allquot Iquot a quotquot Visible Light quot E IIIquot quotIII 4titi 5 DD titi T if quotWavelength Hansmeters Table uf Cuntsuts Visual Stimulus As shown above after violet becomes ultra violet once ultra violet occurs in contrast As humans we can t see past gamma or radio waves After the color red on the spectrum we can not see anything below red as well 0 The formula which calculates speed of light 0 lssac Newton In the 17th century lssac newton put a prism and found that when there is a dense object light s speed changes just a little bit 0 In other words light will always travel at the same speed no matter where on the electromagnetic spectrum the only time it changes ls when there is a dense object but light travels 0 Light can be distinguished in two ways 1 photons 2 a wave 0 Wavelength is determined by looking at two arcs and measuring that distance Wave length Key Point frequency has to decrease as the length 0 grows or increases V ave The human eye can see between 40007000 of ocular light