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What is a sundial?
What is a sundial?
A sundial is an ancient technology used to tell time according to the sun's position in the sky.
As the Earth rotates throughout the day, the shadow that is cast by the gnomen falls on a different part of the sundial's base. The position of the shadow tells the time.
You can make your own sundial with just a few simple steps!
how to make a sundial
how to make a sundial
Materials Needed:
Materials Needed:
1 paper plate (base)
1 straw (gnomen)
2-3 pieces of tape
1 writing utensil
A sunny day!
Directions:
Directions:
Write the number 12 somewhere along the edge of the plate. Poke a hole in the exact center, and stick the straw through.
2. At Noon, take your plate outside and pick a spot that gets sun all day to place your sundial. Your gnomen (straw) should angle slightly toward the North Pole (use tape to secure the straw).
3. Once the gnomen is angled North, rotate the plate (but not the straw) until the straw's shadow lines up with the 12.
4. Secure your sundial with a heavy object or push pins. Every hour, go back to your sundial and mark the time where the shadow is falling.
5. Once your sundial is completed, you can go back and check it the next day to tell time by where the shadow falls!
images source:https://www.wikihow.com/Make-a-Sundial
Human Body Sundial
Human Body Sundial
With a stick of chalk, you can also use your own body as a sundial gnomen! Liza will teach you how in this video:
Learn more about ARCHAEOASTRONOMY
Learn more about ARCHAEOASTRONOMY
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