Talk about your mixed timekeeping metaphors: there are clocks, and pendulum clocks, and there are Nixie clocks, and persistence of vision clocks. But this is a Nixie pendulum POV clock, and we think ...

Here’s how to build a pendulum-controlled clock which can be made really accurate. Retro? – yes, but an interesting project all the same. You’ll need a spare quartz clock which must be adapted by ...

September 25, 1845.—The first successful electric clock to be used in Eagland was patented by Alexander Bain on Sept. 25, 1845. The principle of this early clock is used in electric clocks of the ...