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1
When we need to see the time, we look at clocks or watches. Today we can check the time very
置き時計
easily. However, it was not so easy long ago. Time keeping_has a very interesting history.
簡単に
長い間,ずっと
時間の計測
Ancient people used nature to read the time. About 6,000 years ago, Egyptians used the sun.
2
They put sticks in the ground, and the shadows told them the time. These were some of the first
話す。教えるの過去形
clocks in the world.
3
At night, people could not use the sun.
About 3,500 years ago, Egyptians started to measure
time without it. They put water in pots. The pots had tiny holes in them. The water decreased
…なしで
little by little. The lines in the pots told them the time.
4
About 1,500 years ago, other people used fire. They burned candles, for example..
The candles gave them light, and people saw the time by the lines on them.
与えるの過去形
線
5
About 700 years ago, people started to make mechanical clocks. At first, they used weights to
power these clocks.
The clocks told the hour with bells. However, the weig
were big and
heavy, so these clocks were difficult to move.
6
About 500 years ago, people improved their clocks. They used springs to power the clocks.
The springs were small and light. So people could move the clocks easily. Eventually, people
小さい
began to carry watches.
7
Today, we have clocks and watches everywhere. This is the result of many great inventions and
many people's efforts. Even now, clocks and watches are improving.
8
We cannot really see time, but ancient people tried to recognize it. They used different ideas
and technologies to measure it.
When we look at our clocks and watches, we can easily see the
time.
Now it is time to recognize the wisdom of those ancient people.
