How is it possible for clocks in schools to all display the exact same time?
In several schools and colleges, there are clocks in the hallways and on both sides of a clock unit the time is exactly the same. The position of the second hand is even the same. How is it possible for all of these clocks in each hallway to exactly have the same time and seconds?
There will be a master clock driving all of the slave clocks around the school. This used to be a common way of keeping clocks in step in establishments like colleges and railway stations. The master clock sends an impulse every second to step all of the slave clocks.
In the old days a pendulum clock would make the impulses. Nowadays it will be a fancy controller and might be driven by radio time signal.
There’s a computerized clock network that syncronizes with a master time setting in Colorado.. it may be different locales for different areas. This was for clocks in a school in West Texas.
Kinda.. overkill, no?