Abstract
A sun-dial has a style or gnomon, which in general is parallel to the earth’s axis; its shadow falls on a plane between hour lines. The simplest cases are:
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the horizontal sun-dial, designed on a horizontal table;
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the vertical sun-dial, designed on a vertical wall, facing South.
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Reference
Mayall, R. N. and Mayall, M. L.: 1938, Sun Dials, Boston.
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© 1969 D. Reidel Publishing Company, Dordrecht, Holland
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Minnaert, M.G.J. (1969). Sun-Dials. In: Practical Work in Elementary Astronomy. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3414-2_4
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DOI: https://doi.org/10.1007/978-94-010-3414-2_4
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