Summary

• Refraction
• Thin lenses

• Written Quiz    Timer
  
  
• Huygens' principle
  • Wave sources applet
  • reflection
  • refraction
  • total internal reflection
    
    Example #1
    

gc6 tb24.6
When a beam of light (λ = 590 nm), originally traveling in air, enters a piece of glass (n = 1.5) its frequency
A. increases by a factor of 1.5.
B. decreases by a factor of 1.5.
C. remains the same.
Answer







 



C. remains the same.
The wave speed and wavelength each change but the frequency of a wave remains the same when it crosses a boundary.