Julien Coyne invented a digital sundial. Sundials usually cast a line or triangle to indicate the hour. This one is designed so that when light passes through, it displays the shapes of numbers.

Scientists developed a highly accurate optical ion clock, improving time measurement precision by 1,000 times.

IN these days of accurate clocks and watches no one thinks of using a sun dial to tell the time of day. At best such an instrument can be right but four times a year, and in many places it can ...

Hack a Day’s very own [Jack Buffington] is throwing his hat into the ring for the Buildlounge laser cutter giveaway with his solar clock that isn’t a sundial. The theory behind [Jack]’s ...

Use an online calculator or a dedicated sundial app to get the correct angles for your location. Selecting the ideal location ...

people mainly used sundials. To differentiate, they started saying “of the clock” to specify the time by a clock. So next time you check the time, you’ll know that “o’clock” is a ...

Sundials, hourglasses ... Adrian Cozzani: "I identify as a time artisan." At Polvere di Tempo — which means "dust of time" — each piece requires painstaking precision and patience.

Today, while digital technology has largely replaced mechanical systems, the legacy of those early sundials and mechanical clocks endures the test of time.