How do you make a water clock step by step?

How do you make a water clock step by step?

1. CUT. First, roughly measure halfway down the bottle, then carefully cut the bottle in two using the scissors.
2. FIT. Next, turn the top half of the bottle upside down and place it inside the bottom half, so that the bottle top is facing downwards.
3. POUR. Pour the water into the top of the bottle and then start timing.

How did the ancient Egyptian water clock work?

In order to keep time at night, the vessel was filled with water, which was then allowed to drain. The water would take exactly twelve hours to pour through the hole; marks on the inside of the vessel’s walls marked the precise hours as the water level decreased.

When did the Greeks invent the water clock?

Based on the amount of water that dripped from the first container, one was able to tell how much time had passed. Around 325 BC, water clocks began to be used by the Greeks, who called this device the clepsydra (‘water thief’). One of the uses of the water clock in Greece, especially in Athens, was for the timing of speeches in law courts.

How to make a water clock with clepsydra?

If using a plastic cup instead of the top portion of the bottle, rest the cup inside the lower half of the bottle with the bottom of the cup facing down. Measure and mark how many drops will fall within a certain amount of time. Pour water into your water clock and start timing the flow of water.

What’s the best way to make a water clock?

A glass vase or large plastic food storage bin would work well. Make sure that the bottom is flat so that the water pours in evenly. The top container can be clear or solid. Ideally, the bottom should not have any holes in it, but if it does, this can be corrected later on.

When did the Babylonians start using the water clock?

In Babylon, water clocks were of the outflow type and were cylindrical in shape. Use of the water clock as an aid to astronomical calculations dates back to the Old Babylonian period (c. 2000 – c. 1600 BC).