Photoplethysmography (PPG) is an optical sensing technique that measures blood volume changes and underpins devices ranging from hospital-grade pulse oximeters to consumer wearables that track heart ...

IKEA has launched its new Gömpyssling LED light with sensor. It's a motion-activated light which automatically switches on when you open a cupboard or step into a space, then turns itself off after ...

Presence/motion sensors are one of the best ways to make automations feel more natural, but most of them run on batteries and eventually have to be swapped. That’s one of the main reasons I really ...

Scientists have developed a fully transparent skin sensor that accurately measures UV radiation, detecting light and converting it to electrical signals. So when the Sun's rays reach damaging levels, ...

What just happened? Researchers at University College London have developed a new type of solar cell capable of efficiently generating power from indoor light, a breakthrough that could reduce ...

Ahead of an expected launch this week, a new leak on Amazon has not only revealed the entire new collection of Philips Hue products, but also the way that Bridge Pro will turn your existing bulbs into ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. Programming is a key transferable skill within the chemical sciences with applications ...

Contrary to popular belief, most property crimes—including burglaries and package theft—happen during the day, not under cover of darkness. But night still brings unique challenges: fewer people ...

UC Riverside researchers have unveiled a powerful new imaging technique that exposes how cutting-edge materials used in solar panels and light sensors convert light into electricity—offering a path to ...

Dutch tech scaleup Optics11 has launched an underwater monitoring system that uses light waves to “listen” for the presence of foreign objects. Called OptiBarrier, the system can detect enemy ...