Method for making simple clocks and watches

The manufacturing method of simple clocks and watches is as follows:

1. Preparation materials: a small round cardboard (which can be folded with A4 paper), pencil and eraser, ruler, marker or marker, transparent tape or double-sided tape. Design the clock: draw a circle on the cardboard, which will be used as the dial of the clock. Mark the number 1- 12 on the dial with a pencil, and erase the pencil mark with an eraser.

2. Making dial scale: Draw scale on the dial with a ruler, and draw 12 radial lines from the center outward, each line represents one hour. Mark the position of each hour with a marker or marker.

3. Making hour hand, minute hand and second hand: use transparent tape or double-sided tape to fix toothpicks on small wooden boards as hour hands. Fix another toothpick on another small board as a minute hand. Fix a match on the third board as a second hand.

4. Assemble the clock: put the dial on the table, and then insert the hour hand, minute hand and second hand into the center hole of the dial respectively. Adjust the position of the hour hand, minute hand and second hand so that they can display the time correctly.

The development history of clocks and watches

1, the development history of clocks and watches can be traced back to ancient times, and it has experienced a long time and technological evolution. Early timers: In ancient times, people invented various early timers to measure time, such as sundials, water clocks and sand clocks. These early timers calculate time by measuring the position of the sun or the speed of running water, but their accuracy and stability are limited.

2. Invention of mechanical clocks and watches: With the development of mechanical engineering, mechanical clocks and watches were gradually invented. The earliest mechanical clocks and watches appeared in the European Renaissance, but these early mechanical clocks and watches were large in scale and low in accuracy.

3. Progress and popularization of clocks and watches: With the continuous progress of technology, mechanical clocks and watches have gradually become more precise and accurate. /kloc-in the 0/7th century, the Dutch invented the pendulum clock, which was an important breakthrough of the mechanical clock. Since then, clocks and watches have gradually spread to people's daily lives and become an indispensable timing tool.

4. Introduction of electronic technology and timing technology: With the development of electronic technology and timing technology, electronic clock has gradually replaced mechanical clock as the mainstream timing tool. These electronic clocks have higher accuracy and stability, and are more portable.

5. The rise of smart watches and mobile phone time: In recent years, with the popularity of smart devices such as smart watches and mobile phones, people's ways of obtaining time have become more diverse and convenient. These smart devices can not only display the current time, but also have many functions and applications, such as alarm clock, schedule reminder, weather forecast and so on.