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They discovered
that shadows pointed north when the sun was highest. A shadow
was long in the morning as the sun appeared in the east. It
was shortest around noon. Then it got longer again until the
sun set in the west — but the shadow was on the other
side of the object. (It had moved "clockwise"!)
How
do you think they used this information to keep track of time?
Jot your ideas. Then read on! |
