This accurate one-pulse-per-second clock is made with a few common parts and driven from a 50 or 60 Hertz mains supply but with no direct connection to it. A beep or metronome-like click and/or a ...

An attosecond is one quintillionth of a second, which makes a millisecond (a thousandth of a second) seem like an eternity. If we scale that up, there are as many attoseconds in one second as there ...

If you’re looking for a 1-second time reference, you’d probably just grab a GPS module off the shelf and use the 1PPS output. As demonstrated by [InazumaDenki], though, an old quartz clock module can ...

Elon Musk raised the stakes for the upcoming Tesla Roadster by promising a 0-60 mph time of under one second. This is less than the 1.1-second time announced in 2017 when the Roadster 2.0 was unveiled ...