Sundials typically have a vertical gnomon and hour markers positioned in a circular pattern. As the earth rotates around the ...

The inventions of the hemispherium and the hemicyclium are attributed to Berosus (356-323 BCE), a Chaldean priest and astronomer who brought these types of sundials to Greece ... the shadow of the ...

the largest stone sundial in the world. Towering at an impressive 27 meters, the structure was designed to measure time down ...