Major Concepts of Physics PHY102

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• Major Concepts of Physics PHY102

Lecture 11 Refraction, Dispersion, Total
Internal Reflection February 23rd Spring
2009 Prof. Liviu Movileanu http//physics.syr.edu/
courses/PHY102.07Spring/index.html
lmovilea_at_physics.syr.edu Room 211, Physics
Bldg., 443-8078
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Major Concepts of Physics PHY 102 Lecture 11
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Lecture objectives

• The refraction of light Snells law
• 2. Conceptual examples
• 3. Dispersion/Rainbows
• 4. Total internal reflection/Demos/Applications
• 5. Announcements/Reading assignments

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Wavefronts and rays at a glass-air boundary
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Laws of refraction
                       
1.
 2. The incident ray, the transmitted ray, and
the normal all lie in the same plane the plane
of incidence.3. The incident and transmitted
rays are on opposite sides of the normal.
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All rays lie in the same plane
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Indices of refraction of various materials

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Conceptual example 23.2
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Conceptual example 23.2
                       
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Physics at home
                       
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Mirage seen in the desert in Namibia
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Superior mirage seen in Finland
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Dispersion of white light by a prism
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How does a rainbow work?

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Total Internal Reflection (TIR)
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Total Internal Reflection in Prisms
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TIR applications Fiber Optics
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Conceptual example 23.3
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Conceptual example 23.3
                       
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TIR Applications Endoscope Arthroscope
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Announcements

• Reading Assignment Chapter 23rd
• Section 23.3 The refraction of light
• Section 23.4 Total internal reflection
• Conceptual examples 23.2 The refraction of
  light
• Conceptual example 23.3 Total internal
  reflection
• 2. Homework. HW 4 assignment is due on this
  weeks lab (Please come to see me, if you have
  questions).
• 3. This weeks workshop Reflection, Image
  Formation on Plane and Concave Mirrors

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Major Concepts of Physics PHY 102 Lecture 11
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