Not surprisingly, a sundial keeps solar time (and only while the sun is out...)
a sundial
The sun dial was used for telling time. The sundial would cast a shadow so people know what time of day it was by where the shadow fell.
Sundial
People in the beginning used the stars, and the seasons to keep track of time. So there is no one person that discovered time. The first time devices were the sundial, hourglass, and the water clock. In the 1300's is when the first mechanical clock was invented.
It was invented by priests to honor their gods
Sundial and metronome.
the sterling silver clock was invented after the sundial
He used a portable sundial.
The raised arm of a sundial that indicates the time of day by its shadow is the gnomon (NO-mon). A sundial has but one arm, what do you mean by secondary arm?
The pointer on a sundial is called a gnomon. It casts a shadow on the sundial face to indicate the time.
The pin of a sundial is called a gnomon. It is the part of the sundial that casts a shadow onto the dial face to indicate the time.
The raised arm of a sundial that indicates the time of day by its shadow is the gnomon (NO-mon). A sundial has but one arm, what do you mean by secondary arm?
gnomon
It doesn't. The gnomon is supposed to match the latitude of the location where the sundial is placed. If the latitude is 30 degrees and the gnomon is 45 the entire sundial will have to be tilted to keep correct time. Another way to describe this is to say that the gnomon should be parallel to the Earth's axis.
the shadow of the sundial is just called a shadow
The upright arm of a sundial is called a gnomon. It is the part that casts a shadow on the sundial face to indicate the time.
The center of a sundial is called the gnomon. It is the raised part that casts a shadow onto the sundial face, indicating the time.