1. 13.4 Color and Polarization
By: Desmond Mitchell and DaVon Curvin

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. 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. 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. 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. 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. 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. Color and Light

9. Color and Light
http://www.absorblearning.com/media/attachment.action?quick=90&att=640

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. 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. 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. Polarization: Applications

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