How to make love with a handmade clock?

Material preparation: colored handmade paper.

1. First, fold the colored handmade paper obliquely. Then open the folded colored handmade paper. Fold the colored handmade paper in half on one side. Then open it again.

2. Divide the center of the fold into two equal parts and fold it three times.

3, the two corners are folded in half.

4, one more step, the difference is that the two sides are equally divided and folded twice.

5, the two corners are folded in half.

6. Fold in, both sides.

7. The two are connected.

8. The shape of the watch buckled together is completed.

9. Fold the cross in half, open it again, fold it on one side, and fold it twice.

10, put it aside, and the two corners are half and half.

1 1, the sharp corners are folded in half.

12, put it aside and spread it on both sides. Then fold it in half.

13. Fold both sides twice.

14, the two sides are folded in half and connected together.

15, the two interweave together, completing the love of handmade clocks and watches.

The history and principle of clocks and watches

1, the history of clocks and watches

Primitive people judged time according to the change of sky color and the brightness of the sun. Ancient Egypt found that the shadow length would change with time.

In ancient China, people also used water to time-dripping water from a copper pot, and burning incense to time. Put the incense horizontally and put a rope with steel balls on it. Ancient artisans in China invented leaky carving again. As a timer, clepsydra is used much later than sundial, but it is more common. In the Jiaotai Hall of the Forbidden City, a copper pot is missing.

Leakage refers to a leaky pot for holding water, which is used to drain or hold water; Engraving refers to the division of a day's time unit, and the time of day and night is measured by the floating arrow of the leaky kettle. The leaky carving of the copper pot in Jiaotai Hall was first made in the tenth year of Qing Qianlong (1745), and was made by the Qing Palace Interior Office.

2. The principle of clocks and watches

Clocks and watches have a wide range of applications and many varieties, which can be classified according to vibration principle, structure and application characteristics. According to the principle of vibration, it can be divided into clocks and watches that use low-frequency mechanical vibration, such as pendulum clocks and balance clocks. Clocks and watches that use high-frequency electromagnetic oscillation and synchronous oscillation, such as synchronous clocks and synchronous clocks.

According to the structural characteristics, it can be divided into mechanical watches, such as mechanical alarm clock, automatic, calendar, double calendar, clockwork, etc. Electromechanical, such as electric pendulum clock, electric balance wheel clock, etc. ; Electronic clock, such as balance wheel electronic clock, tuning fork electronic clock, pointer and digital display time electronic clock, etc.