explain the principal behind sundial?
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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 agnomon, which casts a shadow onto the dial. As the Sun appears to move across the sky, the shadow aligns with differenthour-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 geographicallatitude.
In a broader sense, a sundial is any device that uses the Sun's altitude orazimuth (or both) to show the time. In addition to their time-telling function, sundials are valued as decorative objects, literary metaphors, and objects of mathematical study.
It is common for inexpensive, mass-produced decorative sundials to have incorrectly aligned gnomons and hour-lines, which cannot be adjusted to tell correct time.[2]
In a broader sense, a sundial is any device that uses the Sun's altitude orazimuth (or both) to show the time. In addition to their time-telling function, sundials are valued as decorative objects, literary metaphors, and objects of mathematical study.
It is common for inexpensive, mass-produced decorative sundials to have incorrectly aligned gnomons and hour-lines, which cannot be adjusted to tell correct time.[2]
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sundial is a device that tells the time of day 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, a wire or an 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.
The principle of a sundial is based on the projection of a shadow which is cast by a rod (called a style) onto a surface on which lines (hour lines) have been drawn (the table of the dial). As the Sun completes one revolution every 24 hours (it is the Earth in fact that spins on its axis), it is possible to read the local time - and with some corrections, to read the legal time.
Sundials may be constructed on all types of surfaces, whether they are flat or not. Non-flat sundials however, are somewhat rare and very difficult to make. The plane sundials are various, depending on the declination and inclination of the support. The most common are the vertical dials.
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The principle of a sundial is based on the projection of a shadow which is cast by a rod (called a style) onto a surface on which lines (hour lines) have been drawn (the table of the dial). As the Sun completes one revolution every 24 hours (it is the Earth in fact that spins on its axis), it is possible to read the local time - and with some corrections, to read the legal time.
Sundials may be constructed on all types of surfaces, whether they are flat or not. Non-flat sundials however, are somewhat rare and very difficult to make. The plane sundials are various, depending on the declination and inclination of the support. The most common are the vertical dials.
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please mark me as brainlist
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