the sun-stick (the shadow stick) 1. used to pinpoint cardinal directions (n, s, e, w)
DESCRIPTION
The sun-stick (the shadow stick) 1. Used to pinpoint cardinal directions (N, S, E, W) 2 . Used by Eratosthenes to measure the size of the Earth (circumference) 3. Used to determine latitude of one’s location on Earth. Equinox vs Solstice. The Gnomon - PowerPoint PPT PresentationTRANSCRIPT
The sun-stick (the shadow stick)
1. Used to pinpoint cardinal directions (N, S, E, W)
2. Used by Eratosthenes to measure the size of the Earth (circumference)
3. Used to determine latitude of one’s location on Earth
Equinox vs Solstice
The Gnomon
1. Used by Chaldean, Babylonian and Chinese astronomers
2. Part of a sundial that casts the shadow
