Total Internal Reflection Occurs When All the Light is Reflected and None is Refracted

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Total Internal Reflection Occurs When All the
Light is Reflected and None is Refracted
Link
http//physicsstudio.indstate.edu/java/physlets/ja
va/totintrefl/
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Total Internal Reflection
Important for Sparkle in diamonds Physics
demonstrations involving Jello Fiber Optics
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Fiber Optic Christmas Tree
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Fiber Optics Are Used ForFun
Medical Applications Data Transmission
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Medical Applications of Fiber Optic
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For total internal reflection, the angle of
refraction is 90 degrees. The angle of incidence
for which this occurs is called the critical
angle. So,
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Example Problem

• Find the critical angle for light going from
  water (n1.33) into air (n1).
• Is any light refracted (passed out of the water
  and into the air) when the angle of incidence is
  the critical angle? Is any light refracted when
  the angle of incidence is greater than the
  critical angle?

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Example Problem

• Find the critical angle for light going from air
  (n1) into water (n1.33).
• Does total internal reflection occur at the
  interface between any two materials? If not,
  what condition has to exist for total internal
  reflection to occur?