1 / 12

Tuesday, February 1 st , 2011

Tuesday, February 1 st , 2011. Tasks Take out Electromagnetic WS Learning Targets Explain the difference between reflection and refraction Homework Study for Quiz tomorrow! Complete light and color study guide Q.O.D. What type of materials reflect light?. Reflection & Refraction.

elan
Download Presentation

Tuesday, February 1 st , 2011

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tuesday, February 1st, 2011 Tasks Take out Electromagnetic WS Learning Targets Explain the difference between reflection and refraction Homework Study for Quiz tomorrow! Complete light and color study guide Q.O.D. What type of materials reflect light?

  2. Reflection & Refraction Ch. 20

  3. Reflection • Reflection: • Wave strikes an object and bounces off • Example: • Mirror

  4. Reflection • Law of Reflection • States that the angle of incidence is equal to the angle of reflection • Angle in = angle out

  5. Reflection Incidence wave M I R R O R i = angle of incidence Normal r = angle of reflection Reflected wave

  6. Reflection • Smooth surfaces reflect light in 1 direction. • Rough surfaces scatter light in many directions.

  7. Refraction • Refraction: • Bending of waves caused by a change in their speed when they move from 1 medium to another. • Examples: prisms, water, lenses • Light travels faster in less dense media

  8. Refraction #1 Air Water Normal

  9. Refraction • When light slows down (goes from gas to liquid to solid): • Light is refracted (bent) toward the normal (#1)

  10. Refraction #2 Water Air Normal

  11. Refraction • When light speeds up (goes from solid to liquid to gas): • Light is refracted (bent) away from normal (#2)

  12. Visible Light Spectrum • Red(longest wavelength) • Less refracted  less bending • Violet (shortest wavelength) • More refracted  more bending

More Related