Sundials are fascinating time-measuring devices that use the position of the sun’s shadow to indicate the time of day. They have been used for centuries and are a great way to learn about astronomy, geometry, and even the Earth’s rotation. In this article, we will explore three diverse examples of building a sundial to measure time using the sun. These projects are perfect for anyone looking to engage with science in a hands-on way!
This traditional sundial is a beautiful addition to your garden and a functional way to tell time.
In this example, you’ll create a sundial using a flat piece of wood or cardboard as the base and a stick (gnomon) to cast the shadow. The base will be marked with hours, and it’s perfect for sunny days in your backyard.
To make your sundial, start by choosing a sunny spot in your garden that receives sunlight throughout the day. Place your flat base on the ground and drive your stick into the center, ensuring it stands upright. As the sun moves, the stick will cast a shadow on the base. Mark the shadow’s position at every hour for a day; these marks will indicate the hours.
You can paint or decorate your sundial to make it visually appealing! Just remember to adjust the time for daylight saving if necessary.
Note: For added accuracy, you can research how to adjust your sundial according to your geographical location.
This example is perfect for those who want to take their sundial on the go!
You will create a small, portable sundial that can easily fit in your backpack. All you need is a paper plate, a straw, and a compass. First, use the compass to find true north and mark it on the edge of the plate. Next, cut a small hole in the center of the plate and insert the straw so it stands upright at a right angle. Your plate will serve as the base, and the straw will be your gnomon.
To use your sundial, simply place it flat on the ground, ensuring the straw points toward true north. As the sun moves, the shadow of the straw will indicate the time on the plate. This portable sundial is perfect for camping trips or outdoor excursions!
Variation: You can decorate your plate with colorful markers to personalize your sundial.
This modern twist on the traditional sundial combines technology with nature!
For this example, you will create a sundial that uses a smartphone app to track the sun’s position. Start by building a simple sundial using a cardboard base and a gnomon made from a pencil. Follow the same steps as in the classic sundial but use a smartphone app that tracks the sun’s angle and shadows, such as the “Sun Seeker” app.
Place your sundial on the ground, and as you check the app, you can see the sun’s position. The app will help you determine the best time to mark the sundial for accuracy. This project not only teaches you about sundials but also about using technology to enhance traditional methods.
Note: Experiment with different apps to find one that best suits your needs and provides accurate readings based on your location.