hobby #100
Sundial Making
Designing and constructing sundials — from simple horizontal dials to analemmatic and polar dials. Involves trigonometry, latitude calculations, material work (brass, stone, slate), and the satisfaction of telling time without batteries.
Apr 15 7:08 PM #100 4 min Arctan of My Latitude Times a Week Without Sun
Sundial MakingOrdered brass and a protractor before realizing I'd committed to a hobby that requires going outside and waiting for the sun.
code-a-day tied to this hobby
- Rotating Vectors Without Floating Point CORDIC Algorithm