colourOpt

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Chapter 28:   C o l o r Anand Muthiah Jee Park Miranda Yoo 100’s of free ppt’s from www.pptpoint.com library
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28.1: The Color Spectrum Isaac Newton  was the first to make a  systematic study of color. He did this by  passing a narrow beam of sunlight through a   triangular-shaped glass prism •His method showed that  sunlight is composed  of a mixture of all the colors of the rainbow. •This selection of colors is called a spectrum:  red orange yellow green blue , and  violet .
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Triangular Prism
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28.1: cont… True colors - Newton showed that colors in the  spectrum were a property of white light. All  the colors added together make white. •Black is not considered a true color, but it is the  absence of light . Objects that are black  absorb all other light frequencies. You can  see black objects because they cannot  absorb all the light, otherwise you would not  be able to see the object.
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28.1: cont… Sunlight  is an  example of white  light. Under white  light objects that  are white will  appear white and  objects that are  colored will show  their color
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28.2: Color by Reflection Objects are a certain color because of the  light they reflect. (Ex.  Red  objects are red  because they  reflect   red light .) Molecules  are made up of atoms. Atoms  contain  protons  and  neutrons . The electrons  orbit the  nucleus  of the atom. These electrons  can be excited to higher states and can send  out energy waves. 
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28.2: cont… Different elements have different  frequencies for absorbing and emitting  radiation.  Reflection
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This note was uploaded on 11/17/2011 for the course PHYS 121 taught by Professor Burgeson during the Fall '11 term at BYU.

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