3、Through the shadow of the gnomon we can read the local true solar time in Xiehe Middle School.
6、The gnomon in the middle is perpendicular to the plate, parallel to the earth's axis, and points to the celestial North Pole (near the north Star).
9、This is the most ancient time-measuring instrument in China. The record of the use of the gnomon-and-ruler in the ancient book The Rites of Zhou (《周禮》) confirms the long history of this instrument.
4、A stake used for this purpose was the earliest type of sundial and was called a gnomon.
8、The key issues for bronze gnomon casting with integrated and clear surface in investment casting in plaster mold involves to prevent large plate from deformation and to ensure full mold filling.
5、The gnomon-and-ruler indicates the time by the length of the shadow of stylus in the sun.
2、indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial.
7、An equatorial sundial is an ancient scientific equipment to tell time by using the shadow from solar projection. It consists of a sundial plate, a gnomon and a base.
1、In all cases the gnomon lies in the plane of the meridian.
