Position of a Shadow
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 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 projecting piece of a sundial that shows the time by its shadow is called a gnomon. It is usually a thin rod or triangular blade that extends from the dial plate. The position of the gnomon's shadow on the dial indicates the time.
He used a portable sundial.
Not surprisingly, a sundial keeps solar time (and only while the sun is out...)
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.
gnomon
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.
A sundial has to be positioned correctly in order to give you a good estimate of the time.