Phase-coherent lasers are crucial for many precision tasks, including timekeeping. Here on Earth the most stable optical ...

Around the thirteenth century CE, European society was in the midst between transitioning from Roman numerals to the Arabic numerals that we use today. Less remembered are the Cistercian numerals, ...

No one likes getting up in the morning — unless you're an early bird — but a good alarm clock makes waking up just a little easier. We've tried dozens of alarm clocks, from the gentle, gradual ...

Daylight saving time means darker mornings, which can make getting out of bed feel more difficult than ever. If you're missing the gradual, warm light of dawn drifting through your curtains everyday, ...

The twice-yearly ritual has roots in cost-cutting strategies of the late 19th century. Efforts to end it have stalled in Congress. By Alan Yuhas Hello. You may be here to learn when daylight saving ...