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5" Sundial Compass Solid Brass Sun Dial
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More than just a decorative addition to the garden, sundials are the oldest known instruments for telling time. The markings found on the flat surface of a sundial represent each hour of daylight. As the sun moves across the sky from east to west, the gnomon or vertical rod at the center of the dial casts a shadow across this flat surface. The position of the shadow on the hour markings is an indicator of the current time of day. Although garden sundials are a functional time telling piece, many people simply enjoy them as an artistic addition to their garden, along the side of a walkway or as an accent in an outdoor living space. Sundials are typically made out of wood, metal or other materials and often feature intricate designs on their surface. Our sundials are available in brass and cast iron finishes as well as armillary style designs. The choice between the type of sundial you place in your garden often comes down to personal preference of the design.
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As the Sun rises, passes the highest point in its path at noon and to the south, in the northern hemisphere and sets, the shadow rotates around the stick in a clockwise direction, and its position can be used to mark time. Indeed, it has been claimed that the " clockwise " direction in which the hands on a clock rotate was chosen for this reason. A sundial with a vertical pointer " gnomon " will indicate noon correctly when its shadow points north or south. Such a sundial will however work equally well at all times if the pointer is slanted , to point towards the pole of the celestial sphere click here for an explanation--but be warned, it is a bit complicated! The angle between it and the base then equals the geographic latitude of the user. A Paper Sundial Ornamental sundials are often found in parks and gardens, with the pointer widened into a triangular fin, which must point northwards. A sundial of this type can be constructed from folded cardboard or stiff paper: click here to see the basic design used around latitude 38 North of the equator, here for a corresponding one in the southern hemisphere. It is meant to be used at a latitude of 38 degrees and should work adequately in most of the continental US. Instructions: Cut the paper along the marked line: one half will serve as base , the other will be used to construct the gnomon. In the gnomon part, cut away the two marked corners.
A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate the dial and a gnomon , which casts a shadow onto the dial. As the Sun appears to move across the sky, the shadow aligns with different hour-lines , which are marked on the dial to indicate the time of day. The style is the time-telling edge of the gnomon, though a single point or nodus may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. In a broader sense, a sundial is any device that uses the Sun's altitude or azimuth or both to show the time.