We’ve seen a few H-bridge circuits around these parts before, and here’s another application. This time we have an Old Train ...

For more than a century, a particular clock has been keeping time in the Supreme Court of Newfoundland and Labrador, and with attention and care, it can last much longer. On the second-floor balcony ...

Atomic clocks keep time by counting the ‘ticks’ of electrons moving between two energy levels. Physicists have long wanted to count a nuclear tick instead. A nucleus is more shielded than an atom’s ...

A life-long tinkering habit, a broken clock and a set of DVDs led Harold MacVittie to a busy post-retirement job with his own shop in the heart of downtown Chapin. “People don’t realize how many ...

Dinosaur eggshells, once treated as background scenery in fossil digs, have turned out to be some of the most precise timekeepers in the deep past. By decoding the chemistry locked into these fragile ...

An icon of a desk calendar. An icon of a circle with a diagonal line across. An icon of a block arrow pointing to the right. An icon of a paper envelope. An icon of the Facebook "f" mark. An icon of ...

An icon of a desk calendar. An icon of a circle with a diagonal line across. An icon of a block arrow pointing to the right. An icon of a paper envelope. An icon of the Facebook "f" mark. An icon of ...

The most precise timekeepers ever made, atomic clocks, might one day help robotic and crewed missions on Mars stay in sync with each other, as well as enable the equivalent of GPS on the red planet.

9 x 4.5 in. (22.9 x 11.4 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

Alexey Ponomarev and co-workers in Germany have devised a new type of engine that works as an AC-driven quantum motor. It is made from two ultracold atoms that are trapped in a ring-shaped lattice by ...