Pennsylvania State University
Kettering University: Vibration & Waves
A short tutorial providing general information about waves, their categories, properties and behaviors. Includes several animations and some practice questions with answers.
CK-12 Foundation
Ck 12: Fourth Grade Science
This customizable digital textbook covers topics related to fourth-grade science. It is Next Generation Science Standards (NGSS) aligned.
University of Chicago
University of Chicago: Reflector and Refractor
From the Yerkes Observatory Virtual Tour web site. Compares and contrasts reflecting and refracting telescopes. A link from the page leads to a second page which explains why most modern research telescopes are reflecting telescopes.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Light
For this activity, students actually find the angles of reflection and incidence.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Light (K 4)
This site provides two activities that learners can do in class. One uses mirrors to reflect light beams whole another is making a kaleidescope.
Ducksters
Ducksters: Physics for Kids: Telescopes
Kids learn about telescopes in the science of physics including lenses, mirrors, refracting, reflecting, the history, and the Hubble Space Telescope.
Optical Society
Optical Society of America: Optics for Kids: Guiding Light Optical Fiber
This experiment demonstrates the concept of total internal reflection, using basic materials. Accompanied by a detailed explanation of what's happening, and links to articles on reflection and refraction.
Khan Academy
Khan Academy: An Experiment With Light Rays and a Prism
This passage will test your knowledge on reflection and Refraction - Passage 2.
Wolfram Research
Wolfram Science World: Fresnel, Augustin
This site from ScienceWorld provides a short biographical sketch of Augustin Fresnel (1788-1827 CE) and describes his most notable scientific discoveries and contributions. Links are provided throughout for additional information.
Cosmo Learning
Cosmo Learning: Physics Iii: Vibrations and Waves
A collection of video lectures from a physics course focusing on vibration and waves taught at the Massachusetts Institute of Technology. The course overviews topics dealing with mechanical vibration and waves with twenty-three lectures....
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...
Other
Lighthouses: Lighting the Lights
A description of the early lights used in lighthouses and how these lights evolved into what they are today. Explains the contributions of Fresnel to the development of these lights; discusses the Fresnel orders.
Synopsys
Synopsys: A Gentle Intro to Optical Design: Why Is the Sky Blue?
Discusses Rayleigh scattering in plain language and attributes the blueness of the skies to this phenomenon. Discussion of scattering is just one topic of many on this lengthy page of optical topics.
Synopsys
Synopsys: Optics for Kids: What Is Light?
An explanation of what light is and some of its properties.
Exploratorium
Exploratorium: Snacks
Exploratorium's snacks aren't edible, but they are good! Use your science skills to discover gravity, learn about biology, do fun experiments.
Kidport
Kidport: Light
Did you know that light is a form of energy and always travels in a straight line? Discover some more interesting facts about light.
Optical Society
Optical Society of America: Optics for Kids: Watch Tv Upside Down
An experiment to invert a television image using a magnifying lens. Accompanied by an explanation of what's happening.
University of St. Andrews (UK)
University of St. Andrews: Augustin Fresnel
A short biographical sketch on the life and work of Augustin Fresnel (1788-1827). Comments on a few of his scientific accomplishments.
Science4Fun
Science4 Fun: How Rainbows Work
Learn how rainbows work by reading this illustrated explanation.
TeachEngineering
Teach Engineering: Energy
Through nine lessons, students are introduced to a range of energy types--electrical, light, sound and thermal-as well as the renewable energy sources of wind, hydro (water) and solar power. Subjects range from understanding that the...
Physics Classroom
The Physics Classroom: Polarization
"How Do We Know Light Behaves as a Wave?" An answer is provided in this discussion of the polarization of light and the use of Polaroid filters in sunglasses. The four methods discussed on this page are: polarization by transmission,...
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.
Georgia Department of Education
Ga Virtual Learning: Astronomers' Tools
In this interactive tutorial students will learn about a few of the instruments used to further our knowledge of the Universe around us.
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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