Why don't outdoor clock have a second hand?
Now there are more and more large outdoor clocks, we may not feel much at ordinary times, but during the New Year, especially the countdown to the New Year, many people will gather under the big clock and wait for the bell to ring. But I don’t know if you have noticed such a thing. Large outdoor clocks are divided into two-pin and three-pin, but the large outdoor clocks we usually see outdoors are usually two-pin.
Classification
Most of the outdoor clocks can be divided into three-hand clocks including normal hour, minute and second hands, and more used are those two-hand clocks without a second hand. The display function of the second hand in the clock is very weak. Except for the need for timing, other times are rarely used, and there will be timekeeping on the whole point, which makes the role of the second hand even smaller.
Reason
There is no clear indication as to why those large outdoor clocks don't have a second hand. But according to most people, the clock hand of the outdoor clock consumes a huge amount of energy every time it travels, and the second hand does not play a significant role in large clocks, and we do not pay attention to the value of the second hand in our daily life. , in order to save costs, so choose to reduce the second hand.
Moreover, the three clock hands will generate some frictional force in the process of walking. These frictional forces will cause damage to the outdoor clock to a certain extent, and the maintenance of the outdoor clock is very difficult. In order to reduce the number of maintenance, the second hand is reduced.
