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Untitled presentationd&d

  1. 1. 13.4 Color and Polarization By: Desmond Mitchell and DaVon Curvin
  2. 2. Objectives: ❖Recognize how additive colors affect the color of light. ❖Recognize how pigments affect the color of reflected light. ❖Explain how linearly polarized light is formed and detected.
  3. 3. Color Color appears when light reflects off an object ❖For example ➢ Green leaves appear green because they show all wavelengths of light except green
  4. 4. Introduction to Color ❖ The color of an object appears different depending on the lighting conditions. ➢ Like under a blacklight. ❖ The color of an object depends on ➢ wavelengths of light shine on the object ➢ which wavelengths are reflected.
  5. 5. Color ❖ A surface that reflects all colors without absorbing any of its colors shows white. ❖ A surface that absorbs all colors, reflecting none shows black. All colors are caused by light and the way light affects the eyes.
  6. 6. Color ❖White light is a combination of red, orange, yellow, green, blue and violet. ❖When light hits an object wavelengths are absorbed,and reflected.
  7. 7. Color and Light ❖ A prism breaks up light into six colors. ❖ The beams of light can’t be broken up, but can be put back together ❖ If you add two colors of pure light together it creates two different colors
  8. 8. Color and Light
  9. 9. Color and Light http://www.absorblearning.com/media/attachment.action?quick=90&att=640
  10. 10. Polarization ❖ The process of transforming unpolarized light into polarized light ❖ Light from most sources has electric and magnetic fields that show at all angles
  11. 11. Polarization ❖ Light is polarized when the all of the electromagnetic waves are transmitted at the same angle. Everything is aligned. ❖ The vibrations of the electric and magnetic fields are parallel to each other.
  12. 12. Polarization ¤Light can be polarized in two ways: ¤Transmission: allows only waves of a certain angle to pass through. ¤Like glare off of glass or shiny objects. ¤Reflection: most waves of light bouncing off of a surface are polarized parallel to that surface ¤Like glare off of glass or other shiny objects.
  13. 13. Polarization: Applications
  14. 14. Bibliography Get Absorb Physics free for your school. (n.d.). Newton's wheel. Retrieved October 28, 2013, from http://www.absorblearning.com/media/item.action;jsessionid=7186DCE14B5DCB37AE1A014EEBC9351E?quick=9 Polarization. (n.d.). Polarization. Retrieved October 29, 2013, from http://www.physicsclassroom.com/class/light/u12l1e.cfm How Sunglasses Work. (n.d.). HowStuffWorks. Retrieved October 29, 2013, from http://science.howstuffworks.com/innovation/everyday-innovations/sunglass5.htm Molecular Expressions Microscopy Primer: Light and Color - Polarization of Light. (n.d.). Molecular Expressions Microscopy Primer: Light and Color - Polarization of Light. Retrieved October 29, 2013, from http://micro.magnet.fsu.edu/primer/lightandcolor/polarizedlighthome.html Color. (n.d.). HowStuffWorks. Retrieved October 29, 2013, from http://science.howstuffworks.com/color-info.htm