Refraction

• Fill out the Diagram below:

  A) Normal

  B) Incident ray

  C) Angle of incident

  D) refracted ray

  E) Angle of refraction

  F) Principle axis

  
• Rays of light shifting from a more dense to a less dense medium causes light to bend away from the normal
• Rays of light shifting from a less dense to a more dense medium causes light to bend towards from the normal
• Based on the diagram below light is shifting from a less dense to a more dense medium

  
• Based on the diagram below, the critical angle has occurred

  
• The critical angle occurs when the angle of incidence equals the critical angle (90 degrees)
• The critical angle occurs when the angle of incidence is equal to the critical angle, which results in the ray of light to refract 90 degrees
• Total internal reflection occurs when the angle of incidence is greater than the critical angle and the ray of light obeys the law of reflection; angle of incidence = angle of reflection.
• Based on the diagram below, light is shifting from a more dense to less dense medium.

  A)

  B)

  C)

  D)