The overhead projector is perhaps passing out of use, but it is still a useful device with which to do lecture demonstrations. In my early years at Kenyon I was teaching the pre-med course, and found that the overhead projector was an ideal platform for showing the phenomena of polarized light. This note is a discussion of how I learned to use the projector for these demonstrations. Now that I am in my eighth decade, I would like to pass on some of my earlier teaching techniques to my younger colleagues.
References
1.
J. Dorman
Steele
, Fourteen Weeks in Natural Philosophy
(A. S. Barnes & Company
, New York
, 1869
), p. 211
.2.
Wallace
Hilton
, “An experiment on sky polarization and brightness
,” Phys. Teach.
16
, 294
(May 1978
).3.
Alfred F.
Leung
and Henning
Sagehorn
, “Polarization by reflection in a plastic box
,” Phys. Teach.
33
, 461
(Nov. 1997
). This article has some splendid color photographs of the effects of birefringence.4.
Robert
Mark
, “The structural analysis of Gothic cathedrals
,” Sci. Am.
227
, 90
–97
(1972
).5.
P. J.
Ouseph
, “Polarization of reflected light
,” Phys. Teach.
40
, 438
(Oct. 2002
).© 2021 Author(s). Published under an exclusive license by American Association of Physics Teachers.
2021
Author(s)
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