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A sundial is an instrument that tells the time and/or date from the position of the Sun.
As the Sun rises, passes the highest point in its path and sets, the shadow rotates around the stick in a clockwise direction, and its position can be used to mark time.

Sundial - Wikipedia


A sundial is a device that tells the time of day by the apparent position of the Sun in the sky. ..... However, this method does not work for other dials, such as a horizontal dial; the correction m...

What does a sundial do? | Reference.com


A sundial is a device that tells time using the position of the sun. Most sundials have two primary components: a style, also called a gnomon, and a numbered ...

Learn How Sundials Work - National Museums Liverpool


sunbeams & sundials homepage. what causes the seasons. seasons in other countries. the suntracker. sundials in the collection. thins for you to do ...

sundial -- Kids Encyclopedia | Children's Homework Help | Kids ...


Sundials are the oldest known instruments for telling time. The surface of a sundial has markings for each hour of daylight. As the Sun moves across the sky,  ...

How do sundials work? | Yale Scientific Magazine


Nov 22, 2008 ... ... causing objects to cast shadows. A sundial contains a gnomon, or a thin rod, that casts a shadow onto a platform etched with different times.

www.ask.com/youtube?q=What Does a Sundial Do?&v=tI0GqYJha1Q
Jan 20, 2009 ... For thousands of years, people used sundials to tell the time. The first sundials were used more than 3500 years ago in Egypt. The sundial ...
www.ask.com/youtube?q=What Does a Sundial Do?&v=f4DgLl5fh5o
Jun 13, 2013 ... Craftsman John Shultz explains how various types of sundials are designed, crafted from copper and brass and how they work under real-life ...

Equatorial Sundials


In other words, the gnomon does not point straight up from the ground. ... We do this because the sun's motion parallel to the celestial equator is 360 degrees in ...

Sundial FAQ - Accurate Sundials


How Does the Equation of Time Affect Sundial Accuracy? Why Do Garden Centers and Nature Stores Sell Sundials That Cannot Display Accurate Clock Time?