A gnomon (; from Ancient Greek γνώμων (gnṓmōn) 'one that knows or examines') is the part of a sundial that casts a shadow. The term is used for a variety of purposes in mathematics and other fields, typically to measure directions, position, or time.
A gnomon (; from Ancient Greek γνώμων (gnṓmōn) 'one that knows or examines') is the part of a sundial that casts a shadow. The term is used for a variety of purposes in mathematics and other fields, typically to measure directions, position, or time.
Source: Wikipedia "Gnomon" · CC BY-SA 4.0
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