He set up an Arduino Uno to count the pulses using edge detection. This allowed for a reliable count which would serve as the timebase for a simple 24-hour clock.

Based on insights from skincare experts and a panel of testers, here are the 7 best LED face masks that provide red light therapy and more in 2025.

Figure 1 | Design and performance of a deep-blue light-emitting diode (LED) with a light-emitting layer made from a copper–iodide-based hybrid compound. a, Schematic of the ‘dual interfacial ...

When stopped at a red light, you may decide to check your phone, but is it legal to do so? Here's what Louisiana state law says.

A man has been arrested after lighting a cigarette from the eternal flame at the Tomb of the Unknown Soldier in Paris, a sacred site dedicated to fallen soldiers. The shocking act, which took ...

Looking to get your teeth whitened? Our picks of the best teeth whitening kits let you easily whiten your teeth at home, even if you have tooth sensitivity.

Laurel, a pioneer in AI-powered time intelligence, today announced a strategic investment from Workday Ventures. The investment affirms Laurel’s position as ...

Days after the board of the Independent Development Trust suspended its CEO, she was caught on camera allegedly trying to bribe the journalist who first exposed the tender fraud allegations that ...

How Russia’s war on Ukraine led to crucial Trump-Putin summit - and why the stakes are so high World affairs editor Sam Kiley looks what all sides want and what hopes there are for a ceasefire ...