Status of Pages: many pages are works in process, which might be incomplete, incomprehensible, or stubs. Pages I consider complete enough to be worth looking at are:
Light and Darkness (probably the thing most often linked to)
The Limits of Night Vision (only minorly GURPS-oriented. It would be better with animated gifs).
Logarithmic Damage (probably too complex for playability; I might do a better one some day)
Logarithmic Solar System Map 2100 AD (a curio and a play aid, from something that was way too complex)
powerstones (really, it's about enchantment with powerstones)
The Physics of Dragon Flight (a rather silly article, but I had fun with it)