| Cool Cosmos | | Offers lessons and activities for infrared light. Also, includes has online tutorials, games and graphic galleries that related to this topic. |
| Fraunhofer Lines | | Prominent Fraunhofer lines in the spectrum of the sun are shown, together with their corresponding wavelengths. Very pretty! |
| How Stuff Works: Light | | Seven-segment detailed explanation uses drawings and animations to show how light works and how photons are generated, with many related links. |
| Moir Phenomenon | | A book and a downloadable moire demonstration kit for printing on transparencies. |
| Molecular Expressions: Images from the Microscope | | Features hundreds of photomicrographs (photographs through the microscope) of everything from superconductors and high-tech materials to ice cream and beer. Also includes tutorials about microscopy and optics. |
| Oatmeal Box Pinhole Photography | | Photo gallery plus directions to make a pinhole camera, take pictures and develop them. Also, links to other pinhole camera sites. |
| Optical Fibres Project | | How optical fibers work, and information on reflection, refraction, Snell's Law, total internal reflection and critical angles. |
| Optics for Kids | | An overview of the basics of optics suitable for elementary school children. Also discusses careers in science and engineering. |
| Polarized Light | | Fascinating facts about polarized light, from rainbows to beetles, from viking navigation to LCD displays. Myths and truth about polarized sunglasses. Also a shop with polarized-only items. |
| The Speed of Light | | Describes how the speed of light was measured. Includes curriculum-based science quizzes about light for K-12 (grades 4 to 7) students. |
| WebTOP | | A 3D interactive computer graphics system that instructors can use to help teach optics, and that students can use to simulate and visualize optical phenomena to help them learn about optics. |
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