Why does light carry energy even though it has no mass? This video explains the real physics behind photons, energy–momentum relationships, and how light can transfer energy and momentum without mass.

This research is aimed to explore the efficacy and comparison of low-cost light sensor measurements for agricultural applications. For this reason, TSL2561, BH1750, and TEMT6000, low-cost light ...

IKEA is known for making affordable products, and its latest GÖMPYSSLING light, primarily designed for use in wardrobes, cabinets, and as nightlights, does the same. The cost of a motion sensor light ...

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 ...

Tired of the motion sickness? Well, an old nursing trick can instantly alleviate car sickness. No, you don't need to take any meds. Dr. Tania Elliott reveals that smelling isopropyl alcohol, via wipes ...

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 ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

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 ...

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 ...

ETH Zurich researchers levitated a nano glass sphere cluster with record-setting quantum purity at room temperature, avoiding costly cooling. Using optical tweezers, they isolated quantum zero-point ...