Greek Sundial — Carving a Hemispherical Sundial

Carve a Greek hemispherical sundial (scaphe), a concave bowl with hour lines carved on its interior surface and a gnomon (shadow-casting pin) at the center. Attributed to the Babylonian astronomer Berossus (3rd century BCE), this design projects the sun's path as a moving shadow point across the curved inner surface of the bowl.

Advanced

120-180 minutes

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