How Semiconductors Work
- Information about the properties of these materials of key importance in electronics. Also covers its manufacture and its use in transistors and chips.
- http://computer.howstuffworks.com/diode.htm

The Superconductor Collection
- Illustrates how superconductors appear under a microscope.
- http://micro.magnet.fsu.edu/micro/gallery/superconductor/super.html

Superconductors
- A site featuring basic information such as how these materials work, types, uses, and links.
- http://www.superconductors.org/