5 Questions
What was the purpose of using a gnomon in ancient civilizations?
To observe the motion of the sun
What can be observed from the shadows cast by a gnomon?
The path of the sun
How often does the moon change its appearance?
Every 29.5 days
What changes can be observed in the moon's appearance?
It changes from a thin semi-circular disk to a full circular disk
What is the basis of ancient calendars?
The phases of the moon
Explore the astronomical observations made by Babylonian and Egyptian civilizations regarding the sun's motion and the phases of the moon. Learn about the use of gnomon sundials and the observation of the moon's cycle.
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