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E-learning for Kids
E Learning for Kids: Science: North Sea: Why Do We Need Light?
Frederik is doing experiments about light to find out how it helps people to see things.
Optical Society
Optical Society of America: Optics for Kids: Blue Sky Red Sunset
An experiment where light is shone through a bottle of water, and then milk added, to see how this affects the path the light takes (with links to articles on reflection and refraction that explain what is happening).