Lecture 29 Slides

The test . . .
Correct CID or lose 5 points
No more than 3 papers stapled neatly to
the answer sheet
Horizontally Polarized Light
Vertically Polarized Light
Diagonally Polarized Light
Circularly Polarized Light
Elliptically Polarized Light
Unpolarized Light
When unpolarized light of intensity Io is
incident on a polarizer what is the intensity of
the light that will be transmitted?
Io /2
Io /4
2I o
Depends on the angle of the transmission
axis of the polarizer
Unpolarized light of intensity I0 is sent through
three polarizers, one after the other, which
pass light polarized at 0, 45, and 90 degrees.
What is the intensity of the light exiting the last
B : I0
C : I0 / 2
D : I0 / 4
E : I0 / 8
MATTHEW 20:30-34
30. ¶ And, behold, two blind men sitting by the way side, when
they heard that Jesus passed by, cried out, saying, Have mercy
on us, O Lord, thou Son of David.
31. And the multitude rebuked them, because they should hold
their peace: but they cried the more, saying, Have mercy on
us, O Lord, thou Son of David.
32. And Jesus stood still, and called them, and said, What will
ye that I shall do unto you?
33. They say unto him, Lord, that our eyes may be opened.
34. So Jesus had compassion on them, and touched their eyes:
and immediately their eyes received sight, and they followed
Polarization by Reflection Brewster’s Angle
Fresnel Coefficients
Polarizing Sunglasses
Brewster Windows
image from http//www.jklasers.com/HeNe/HeNe_Laser_Report.htm
Other Ways to Affect Polarization
Optical Activity
Cat’s eyes have pupils that can be
modeled as vertical slits. At night, would
cats be more successful in resolving
Two headlights on a distant car
Vertically separated lights on the mast of
a distant boat
If the two sets of lights are the same
distance away, the ability to resolve them
would be the same.
Diffraction Gratings (Resolving
power means something
different here)

Resolving Power of a Two Slit
Resolving Power with N Slits
Resolving Power of a Grating
Sign Conventions in Lens
Maker’s Equation
Exam Review Topics
Reflection, Refraction, Snell’s Law, Total Internal Reflection,
ray approximation
Images with mirrors, ray diagrams
Images with lenses, lens maker equation
The eye, glasses
Angular magnification, magnifying glasses, microscopes,
Interference, two slit interference pattern
Thin film interference
Diffraction, diffraction grating, resolving power of grating,
resolving power of telescope, etc.

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