Equatorial sundial. On equatorial sundials, the planar surface that receives the shadow is exactly perpendicular to the gnomon's style (central bar).

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Equatorial sundial. On equatorial sundials, the planar surface that receives the shadow is exactly perpendicular to the gnomon's style (central bar). This plane is called equatorial, because it is parallel to the equator of the Earth and of the celestial sphere.

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Size: 3658px × 2439px
Photo credit: © SEBASTIEN BEAUCOURT/LOOK AT SCIENCES/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: close-, detail, dial, equatorial, gnomon, gnomonics, ground, keeping, meadow, sun, sundial, technological, technology, time, time-keeping, timekeeping