- Sundial - Wikipedia
The Tower of the Winds in Athens included both a sundial and a water clock for telling time A canonical sundial is one that indicates the canonical hours of liturgical acts, and these were used from the 7th to the 14th centuries by religious orders
- Sundial | Definition, History, Types, Facts | Britannica
Sundial, the earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun’s rays As the day progresses, the sun moves across the sky, causing the shadow of the object to move and indicating the passage of time
- View All Sundials
This is a complete listing of sundials in the North American Sundial Society Registry Click on any dial thumbnail picture or city name to display the full dial listing and images
- The British Sundial Society: How Sundials Work
This set of pages explains, with diagrams, how a sundial works It begins with the simplest (equatorial) dial where the shadow of a stick (the gnomon) falls on hour lines every 15 degrees apart, and then moves on to show how horizontal, vertical and polar dials are all derived from this basic type
- EAAE - How does a sundial work?
A sundial is a device that measures time by the position of the Sun In common designs such as the horizontal sundial, the Sun casts a shadow from the gnomon, which is a thin rod straight edge, onto a flat surface marked with lines indicating the hours of the day
- Sundials: Where Time Began - Farmers Almanac
A sundial is one of the most common decorative ornaments seen in flower gardens today, providing quiet, aesthetic beauty as it peeks out from the rose bushes and hydrangeas It’s hard to imagine, but this simple device once served entire civilizations as the only means to tell time
- The Invention and Evolution of Sundials - The Horology Lab
A sundial operates based on the Earth’s rotation and the sun’s movement across the sky The most essential component of a sundial is the gnomon, a stick or triangular object that casts a shadow
- Sundials - Royal Museums Greenwich
For thousands of years, these instruments helped us pass the time For thousands of years, the sundial has told the time and divided the day No doubt the first crude sundial consisted of no more than a vertical stake in the ground
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