Sundial Technicalities

This section of the site contains technical information which might be of help to diallers.

Spherical Triangles

In order to undertake calculations on the celestial sphere, whether for the purposes of
astronomy, navigation or designing sundials, some understanding of spherical triangles is
essential.

• Notes on Spherical Triangles
• The Gnomonic Cipher, a Dan Brown Spoof
• The Queens' Dial – Refurbishment Considerations
• The Shadow of a Point cast onto a Plane
• The Angles of the Time Lines on a Sundial
• Scaling the Universe via a Transit of Venus