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 ...

Researchers have demonstrated a way to maintain an unstable quantum system by applying bursts of microwave radiation. The technique is comparable to methods used for controlling an inverted pendulum ...

Using a single-walled carbon nanotube as both a mechanical support and a torsional spring, scientists have built a tiny, electrically controlled pendulum (Science 2005, 309, 1539). Jannik C. Meyer and ...