Cool Cosmos
- Offers lessons and activities for infrared light. Also, includes has online tutorials, games and graphic galleries that related to this topic.
- http://coolcosmos.ipac.caltech.edu/

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.
- http://micro.magnet.fsu.edu/

Nanoptics, Inc., Fiberoptic Tutorial
- History, theory and use of fiber optics.
- http://www.nanoptics.com/tutorial.htm

Scanning Electron Microscopy (SEM)
- Learn about the scanning electron microscope and its uses.
- http://www.mos.org/sln/SEM/

Optics for Kids
- An overview of the basics of optics suitable for elementary school children. Also discusses careers in science and engineering.
- http://www.opticalres.com/kidoptx.html

Moiré Phenomenon
- A book and a downloadable moire demonstration kit for printing on transparencies.
- http://diwww.epfl.ch/w3lsp/books/moire/index.html

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.
- http://www.howstuffworks.com/light.htm

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.
- http://www.polarization.com/

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.
- http://users.rcn.com/stewoody/

Fraunhofer Lines
- Prominent lines in the spectrum of the sun are shown, together with their corresponding wavelengths.
- http://www.harmsy.freeuk.com/fraunhofer.html

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.
- http://webtop.msstate.edu/

Tux Teaches Photonics
- A collection of information, lessons and quizzes about photonics, taught by Tux.
- http://www.photonics.150m.com

Optics Exercises and Tutorial
- (Univ of Florida). A sample electronic lecture or worksheet.
- http://www.phys.ufl.edu/~selman/Demo1.html