Georgia State University
Georgia State University: Hyper Physics: Crossed Polarizers
At this univeristy physics department site, the polarization of light is explained and illustrated. Methods for analyzing light to determine the degree of polarization are stated and explained with equations.
Georgia State University
Georgia State University: Hyper Physics: Polarization by Absorption
The operation of Polaroid filters on a pair of sunglasses is shown.
University of Colorado
University of Colorado: Physics 2000: Polarization
An incredible series of illustrated pages that explain polarization, polarized light and its effects, and polarized filters and sunglasses. Features interactive Java applets.
Other
Polarization.net: Polarized Light in Nature and Technology
Incredible sight focusing on all varieties and instances of polarization as found in nature and in human-made technologies.
Exploratorium
Exploratorium: Science Snacks: Polarized Sunglasses
An experiment that demonstrates how polarized sunglasses work.
MadSci Network
The Mad Scientist Network: Microwave Physics
Using a question and answer format, this page attempts to answer the question "How much light do sunglasses block?" Explains polarized light and the ability of filters to selectively absorb polarized light.
NC State University
Pira Demonstration Catalog: Dichroic Polarization
Short descriptions of possible physics demonstrations for illustrating dichroic polarization and the role of Polaroid filters in blocking roadway glare. Suitable as an idea-generator for student projects.
York University
The Joy of Visual Perception: Physics of Visual Stimulus
From an online "book," this particular page describes physics principles related to vision and sight. Keywords are linked to other pages with further information. The role of sunglasses in blocking glare is discussed and explained. A...