Is the radio clock better or the quartz clock?
Radio wave timing depends on the radio tower to send waves regularly, and the micro receiver of the watch receives the signals for synchronization. China has a vast territory, and the launch center is located in Shangqiu, Henan Province, so it is difficult for radio waves to cover the whole territory.
Radio waves travel 500- 1000 km. If it is rainy, foggy, with many tall buildings, or geographically far away from broadcasting towers (such as the Northeast Far East, Guangdong and Fujian and other southeast coastal areas, as well as Tibet and Xinjiang, etc.). ), the received signal will be blocked, and the reception will fail to a certain extent, which will affect the use of users. After a long time, it will naturally affect users to give up this function.
Quartz clock is a kind of timing tool. Everyone is familiar with the reference to clock, which is a kind of timer that indicates time. In daily life, the clock is accurate to 1 second. But in many fields of scientific research or engineering technology, the time requirement is much higher. Quartz clock is produced according to this need.
Matters needing attention in purchasing quartz clock
(1) Look at the appearance. The shape should be beautiful and generous, and the color should be coordinated with the interior decoration products. The clock face is intact, and the numbers and hands on the clock face should be fashionable and beautiful.
(2) Check the machine parts. Turn the coordination button on the back cover of the quartz clock by hand, and the instructions of the hour hand and the minute hand should correspond; Clockwise and counterclockwise rotation should be flexible, and there should be no firing pin phenomenon.
(3) Time measurement. Quartz clock with time-telling function, when telling time, the minute hand indication shall not exceed half a dial; Minutes can be dialed forward or backward at will, and the time after dialing should be consistent with the indicated scale.