Some New York City teachers say it’s high time for a refresher on old-fashioned clocks. Tiana Millen, an assistant principal at Cardozo High School in Queens, said this year’s ban on smartphones ...

Pebble unveiled the Pebble Round 2 on Friday. It's a thin, open-source smartwatch with a 10-day battery life. It improves on the Pebble Time Round, which launched in 2015. Ten years after Pebble's ...

We’ve seen a few H-bridge circuits around these parts before, and here’s another application. This time we have an Old Train Station Clock which has been refurbished after being picked up for cheap at ...

Researchers demonstrated a new optical atomic clock that uses a single laser and doesn't require cryogenic temperatures. By greatly reducing the size and complexity of atomic clocks without ...

If you start your day before the sun rises, or if you’re looking for a more peaceful alternative to a blaring alarm clock, a sunrise clock may be your new favorite nightstand accessory. They mimic the ...

The Gilbert U-238 Atomic Energy Lab was an actual radioactive toy and learning set sold in the early 1950s. The $49.50 set came with four samples of uranium-bearing ores (autunite, torbernite, ...

While most of our picks for the best alarm clock use beeps or music to wake you up, many people may opt for an alarm that doesn't rely on sound, including those who are deaf or hard of hearing, ...

Circadian rhythms are 24-hour cycles determining periodicity in various physiological processes, including nervous system activity and hormone production, which influences sleeping and feeding ...