The gnomon of a sundial is the tilted arm that extends above the dial.
PHYSICS · Multi-part · GCSE · Physics · Space Physics · Space Physics
Problem
The gnomon of a sundial is the tilted arm that extends above the dial.
(a) At what time of day will the shadow of the gnomon be its mathematical projection on the dial?
(b) Why does the longitude of a sundial matter?
(c) How does the shadow help us tell the time at other times of the day?