History of sundials
id:
history-of-sundials-161-6703570
title:
History of sundials
text:
A sundial is a device that indicates time by using a light spot or shadow cast by the position of the Sun on a reference scale. As the Earth turns on its polar axis, the sun appears to cross the sky from east to west, rising at sun-rise from beneath the horizon to a zenith at mid-day and falling again behind the horizon at sunset. Both the azimuth (direction) and the altitude (height) can be used to create time measuring devices. Sundials have been invented independently in every major culture a
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/History_of_sundials
date created:
2010-05-08T17:49:00Z
date modified:
2024-08-27T05:05:12Z
main entity:
{"identifier":"Q5868936","url":"https://www.wikidata.org/entity/Q5868936"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/a/aa/Ancient-egyptian-sundial.jpg","width":575,"height":629}
fields total:
13
integrity:
15