Before clocks were made, people kept track of time by other means. In
ancient Egypt, people used a water clock. Water dripped slowly from one
clay pot into another. People measured time according to how long it
took one pot to empty and the other one to fill. Candle clocks were
common during the Middle Ages. As such, when a candle burned, marks
on its side showed about how much time had passed. A final ancient way
to measure time was the sundial, which used the movement of the sun
across the sky. The shadows moving across the face of the sundial
showed the current time. What is the main idea? *
As such, when a candle burned, marks on its side showed about how much time had
passed.
Before clocks were made, people kept track by other means.
In ancient Egypt, people used a water clock.
All the above