PBS
Pbs Nova: The Light Stuff
In a provided image, students try to identify what ordinary objects in the house can kick light into a lower gear. Find out why the speed of light isn't always 186,000 miles per second.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is the Speed of Light?
How fast does light travel? How does its speed change when it travels through different media? Learn how scientists calculate the speed of light and some interesting facts.
CK-12 Foundation
Ck 12: Plix: Refraction: Light Entering Water
[Free Registration/Login Required] Explore how water distorts the location of objects due to the speed at which light travels through different mediums by moving the red point to adjust the angle of the fisherman's line of vision.
Synopsys
Synopsys: Optics for Kids: What Is Light?
This site provides a short explanation of light, how it travels, and the speed in which it travels. Many other concepts related to optics can be found on this site as well.
Science4Fun
Science4 Fun: Light
What is light? Illustrated discussion of the speed of light, how we see colors, and how light helps us.
Wolfram Research
Wolfram Science World: Roemer, Olaf
This ScienceWorld site provides a biographical sketch of Olaf Roemer and describes his most notable scientific discoveries such as the first good estimate of the speed of light.