In a grandfather clock, a pendulum swings back and forth and this periodic motion is maintained using the energy stored in its suspended weights. This is done with the help of the escapement mechanism ...

As a rule, Donald Saff doesn’t collect clocks he can’t see inside of. It’s the harmonic entanglement of gears—and the skill needed to craft them—that first lured him to horology, the study of ...

We may earn commission from links on this page, but we only recommend products we love. Promise. Remember Magic 8-Balls? If you ever had one, you probably asked it fun questions, like if your latest ...