Dead Reckoning: Calculating Without InstrumentsThis area of the website provides discussions, errata and supplementary materials related to my book on advanced techniques of mental calculation. |
SundialsThis area discusses my long-standing interest in precise, elegant sundial designs. |
AstrolabesThis area provides an overview and a detailed analysis of the designs and uses of astrolabes and other intriguing ancient analog computers used for astronomical calculations. |
Sherlock HolmesThis area concerns my interest in the stories and "The Game" related to Sherlock Holmes. |
PianoThis area contains various materials and opinions related to music in general and the piano in particular. |
Other InterestsThis area is for other interests of mine that may end up with their own area of the website eventually. Current topics include stereo photography, lunchtime sketches, and various questions that I'm hoping others can answer. |