When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. You can now use your Windows Phone device as a lux meter thanks to a new app that has just ...

The project was designed with AVR microcontroller to create a lux meter that will be used to measure any illumination level. A visible component that is defined in radiant flux or light power is ...

How does one go about measuring the amount of light in a given area? With a Light Meter of course! Maintaining proper lighting levels can be very important in places like schools, hospitals and even ...

Can a smart phone light meter really be every bit as good as a dedicated professional device? Erik Vlietink takes a good look at the Illuminati from Illuminati Instruments. App-based light meters that ...

[Minisystem] has a thing for dynamo powered bike lights. He wanted to measure how well his latest is working, but just logging the current flow through the LEDs wasn’t enough for him. He picked up a ...

Human vision relies on light. After reflecting off surfaces, light enters into the eyes and travels through the cornea and pupil to produce an image on the retina. The eye is sensitive to a broad ...

And that is absolutely 100% accurate, with no measurement errors. But Jack, I hear you say, what are you talking about? The reason we know that that's exactly the speed of light, is that we defined it ...

Once no brighter than a birthday candle, LED lights have become retina-searing fireballs. LED is short for light-emitting diode, and while LED bulbs have been around for decades, the technology that ...