The cool part of the article comes when the author gets to shine a light on a mirror on the master pendulum, and compare its behavior to modern ultra-high precision clock sources. There’s a lot ...

through the balance clock, down to the modern pendulum clocks and chronometers. There are many illustrations, and the various methods of compensating for temperature are described in plain non ...

A quick hall effect sensor to detect the pendulum passing made it into a proper clock. Considering it’s a printed plastic clock, losing only 2-3 seconds per day is incredibly good. The whole ...