For general mathematical information see MathWorld.
For other mathematics departments see UK Mathematics Departments, Centres and Institutes.
A site dealing specifically with water waves is under development at WikiWaves.
If you would to look at some of my photos, see my flickr pages.
For detailed information, reviews, and discussion about digital photographic equipment and techniques see Digital Photography Review and PhotoZone.
For common sense opinions about (mostly) Canon equipment see Bob Atkins.