Physics Classroom
The Physics Classroom: Sound Waves & Music: Reflection, Refraction, Diffraction
In this illustrated physics tutorial, students learn about sound wave behaviors and apply them to the reflection, diffraction, and refraction of sound waves.
Georgia State University
Georgia State University: Hyper Physics: Total Internal Reflection
This physics department site provides a definition and explanation of the phenomenon of total internal reflection. Includes a diagram and an equation for calculating the critical angle for light approaching a surface.
PBS
Pbs Learning Media: The Beginnings of the Telescope
This animated essay from the NOVA Web site examines the design of Galileo's refracting telescope and Sir Isaac Newton's reflecting telescope.
Exploratorium
Exploratorium: Critical Angle
Students can see light reflected and refracted in this demonstration. They will also discover the total internal reflection of light.
Other
Byju's: Physics: Reflection of Waves
Explains what happens to a wave when it hits a fixed end or a free end.
Georgia State University
Georgia State University: Hyper Physics: Polarization by Absorption
The operation of Polaroid filters on a pair of sunglasses is shown.
Physics Classroom
The Physics Classroom: Light Waves and Color: Thin Film Interference
Students investigate an example of interference that provides further evidence in support of the wavelike behavior of light.
Science4Fun
Science4 Fun: How Rainbows Work
Learn how rainbows work by reading this illustrated explanation.
Other
Meade Instruments Corporation: How Telescopes Work
This page explains in fairly simple terms the basics of telescopes. It includes information on the various types of telescopes and the factors people use to select the correct telescope for them. Meade is a leading telescope manufacturer.
Other
Transverse and Longitudinal Wave Propagation in an Elastic Medium
Extensive information about how waves behave in an elastic medium. Covers different types of waves, their characteristics and behavior, the anatomy of the ear, the speed of sound in different media, the parts of a wave, and wave phenomena.
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