IEEE Spectrum on MSN

A chip that keeps time (almost) like an atomic clock

For decades, atomic clocks have provided the most stable means of timekeeping. They measure time by oscillating in step with ...
PBS

What’s a Clock? Learning to Tell Time

Educator Ruth Mork teaches kids about clocks — from sundials to cuckoo clocks to roosters. Ruth Mork introduces clocks of all kinds — sundials, candle clocks, hourglasses, cuckoos, even a rooster! She ...
PBS

Tick Tock Around The Clock

While Eddie sticks to his schedule, Barry admires his new watch and we learn all about telling time. Our teacher reads us a time-ly story called Mr. Topper's Toy Store. Meanwhile, Eddie keeps time by ...
Morning Overview on MSN

An optical clock sets a record, edging us toward a new second

Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can ...