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ASTR 1010 , week 3

by: Maryam Notetaker

ASTR 1010 , week 3 ASTR1010

Maryam Notetaker
GPA 4.0
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About this Document

these notes cover the light chapter , preparing for the light quizz
Survey of Astronomy
Class Notes




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This 3 page Class Notes was uploaded by Maryam Notetaker on Friday September 9, 2016. The Class Notes belongs to ASTR1010 at University of Toledo taught by Dr.jillian in Fall 2016. Since its upload, it has received 7 views. For similar materials see Survey of Astronomy in Science at University of Toledo.

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Date Created: 09/09/16
Chapter 4: The Light 1. Light is fast more than we know a. Nature of light: Mechanical Light Energy A little Transport energy and it in packet of goes the electric energy *it same way as *the arrives as wave are a single the wave. Ex: repeated time ocean weaves, earthquake sound 2. Electromagnetic spectrum (EM):  Violet and blue have higher energy and shorter wavelength produce higher energy  Red has less energy and long wavelength produce less energy  All the lights have the same speed  If we want to see a light at night we have to use a optical(visible ) photons  List of the EM spectrum in order longest to shortest wavelength  Infrared : Radio Visible: same ase ex: earth rainbow color Ultraviolet: Gamma Ray: ex ex stars X-ray star deaths Wavelength Energy (from highest to lowest) 3. Temperature:  Ultraviolet to infrared: hot Gas  Visible and infrared: medium temperature  Infrared or radio: Cold gas 4. Three kinds of spectrum emission continuum absorption hot gas, the gives off when the gas absorb light of gas absorb only one many light from light form wavelength, the other an angle with no light that an eye gaps . tell .electron can't see. us the jumps to electrons temperature higher jump to of the sun level . lower level also it tell us the composents of the sun 5. Conclusion  If the object is hot, means it has higher energy lights  If that object emits only at a specific wavelength means it is made up of a hot thin gas  Hydrogen elements are: red, blue, purple emission lines. That’s why we see it as a purple color  Neon elements: strong red, orange, yellow emission lines so it gives us a red light the heaviest element  Photon’s color is blue ( short wavelength )


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