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  1. 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 …

  2. 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 …

  3. How a Sundial Works (And Why You Need One in Your Backyard)

    Feb 19, 2024 · Building a sundial in your backyard may be an enjoyable and instructive hobby. Here is a tutorial to assist you in creating your own makeshift sundial:

  4. 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.

  5. How Does A Sundial Work? - Sciencing

    Sep 6, 2019 · A sundial uses the movement of the sun to keep track of time. There are several varieties, but one of the most basic consists of a thin rod or triangle -- called a gnomon -- and …

  6. 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 …

  7. How to Read a Sundial: 11 Steps (with Pictures) - wikiHow

    Mar 10, 2025 · Sundials have been used to measure time, based on the Sun, for thousands of years. This simple device can be made up of nothing but a flat dial and a gnomon (the …

  8. sundial - Wiktionary, the free dictionary

    Aug 4, 2025 · sundial (plural sundials) A device measuring the time of day by the position of a shadow cast by a pole or plate (gnomon) upon an engraved series of marks. quotations

  9. The Ancient Science of Timekeeping and Sundials

    6 days ago · Development of Sundials and Solar Timekeeping Sundials first appeared in ancient Egypt and Babylon, using the movement of shadows to divide the day into hours. Egyptians …

  10. 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 …