Molecular Expressions: Science, Optics and You:Timeline, interactive java applets showing various properties of light and lenses, tutorials, and other links for students.
Color and Color Vision: Explains additive and subtractive colour mixing, the mixing of wavelengths, Newton's dispersion of white light to show the colours of the rainbow.
Colorworm Explains Color: An online book about light and color for all ages. Explains the electromagnetic spectrum, visible light, RGB, CMYK, light, and mixing paint colors. By Pat Ellison.
How Does a Pinhole Camera Work?: Explains the principles behind the pinhole camera.
How Light Works: Explains light in terms of photons to explain reflection, refraction and absorption.
How we see Colour: Explains human perception of colour and optical illusions in depth with clear diagrams.
Java Applet: Java applet exploring reflection and refraction of light beam and laser beam.
Light and Optics: Online Meteorology Guide: Introduces optical effects resulting from light interaction with air, dust and haze particles, ice crystals and water droplets.
Light Refraction: Uses example of sphere on a checkerboard to show how light is refracted.
LightForest: The Holographic Rainforest: Explains what is an hologram and the physics behind it. Also shows a variety of examples gathered in a virtual exhibition.
MicroWorlds: An educational tour of current research at Berkeley Lab's Advanced Light Source. Contains information about the facility research, and teaching modules.
Optics 4 Kids: Tells about the science of light and answers common questions. Also explores careers in optics. From the Optical Society of America.
Optics for Kids: An overview of the basics of optics, also discusses careers in science and engineering.
Science Snacks About Light: A set of very simple experiments featured by Exploratorium, each one with details on materials, assembly, how can be done, and an explanation of the physical laws involved.
Skytopia - Colour and Light Trivia: Amusing guide lists various oddities about colour and light. Find trivia on 3D, mirrors, light bulbs, and contradictions about the perception of colour.
The Electromagnetic Spectrum: From NASA, an overview of the different types of electromagnetic waves.
The Reflection and Refraction of Light: Uses geometry to predict reflection from plane and spherical mirrors, and looks at how speed and wavelength varies with different media.
The Speed of Light: Defines the speed of light and describes how man learned to measure it. Includes interactive quiz.
What Makes an Object Coloured: Explains principles of reflection, refraction, absorption and transmission to explain how objects are a particular colour.