The part of a sundial that casts the shadow is known as the "gnomon." The gnomon is a thin, wedge-shaped piece that is positioned perpendicular to the dial plate, allowing it to cast a shadow onto the dial's surface. This shadow moves as the sun travels across the sky, indicating the time of day. Sundials have been used for centuries as a way to tell time based on the position of the sun in the sky. The gnomon is a crucial component of the sundial, as it is responsible for creating the shadow that marks the hours. The angle and length of the gnomon determine the accuracy of the sundial, so it is important for it to be properly aligned and positioned. If you are interested in learning more about sundials and how they work, there are many resources available online. Websites like [www.sundials.org](www.sundials.org) offer detailed information about the history of sundials, different types of sundials, and how to create your own sundial. In addition to its practical use in telling time, sundials are also popular as decorative pieces in gardens and outdoor spaces. The intricate designs and craftsmanship of sundials make them a beautiful addition to any landscape. The gnomon plays a crucial role in the functionality and accuracy of a sundial. Without a properly positioned gnomon, the sundial would not be able to accurately tell time based on the sun's position in the sky. Whether you are interested in the science behind sundials or simply appreciate their aesthetic appeal, the gnomon is a fascinating component that adds to the mystique and charm of these ancient timekeeping devices. Next time you see a sundial, take a moment to appreciate the gnomon and the role it plays in helping us mark the passage of time.

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