Physics with Trig II

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Physics with Trig II
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(No Transcript)
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Where weve been

• Mechanics
• Solids Fluids
• Thermal Physics
• Sound
• Electricity
• Magnetism
• Induced Voltage
• ac Circuits

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Where were going

• Ch 22 Reflection Refraction of Light
• The Nature of Light (Wave vs. Particle)
• Reflection Refraction
• Total Internal Reflection

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(22.1) The Nature of Light
Dual Nature Wave vs. Particle
Calculate the energy of several common photons
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(22.2) Measurements of the Speed of Light
c ? speed of light (in vacuum)
Second?
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(22.3) The Ray Approximation in Geometric Optics
Light travels in a straight line path until it
encounters a boundary between two different
materials.
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(22.4) Reflection Refraction
Reflection
Good example Reflection Red-eye
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(22.5) Law of Refraction
n ? index of refraction of a material c ? speed
of light in vacuum v ? velocity of light in that
material
See page 692, Table 22.1 for various values of n
N vacuum 1.00 (exact)
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(22.5) Law of Refraction, contd
Snells Law
Remember ? is measured from Normal
Good example Spoon in water
Problem 22-15
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(22.6) Dispersion Prisms
Demonstrate a Prism
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(22.7) The Rainbow
Be sure to read about what causes the rainbow to
occur
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(22.9) Total Internal Reflection
T.I.R. as it applies to fiber optics.
normal
Air n1.00
Interface
Water n1.33
200
400
450
? critical48.80
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The End