If you happen to be in the market for a small artificial sun, you may be interested to know that for about $1300, you can get a tennis-ball-sized LED array that outputs 120,000 lumens.

At first glance, it may look like [Rybitski]’s 7-segment RGB LED clock is something that’s been done before, but look past the beautiful mounting. It’s not just stylishly framed; ...

They are hardly essential, but can act as useful teachers The problem Lots of houseplants fail because they aren’t getting enough light. But what does “bright, indirect light” really mean in practice?

Editor's note: An earlier version of this story included an incorrect graphic noting only two Anheuser-Busch beers in the 2025 Ad Meter top 10. In fact, there were four: one each from Budweiser, Bud ...

What do the traffic meters on some California highway onramps do, and do you have to obey them? Here’s what to know. The meters are intended to control the flow of traffic onto state highways to ...

This project demonstrates a low-cost intelligent traffic signal system using Arduino and ultrasonic sensors to reduce congestion caused by fixed-timer traffic lights. Four HC-SR04 sensors detect ...

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 ...

Chris Wedel is a fan of all things tech and gadgets. Living in rural Kansas with his wife and two young boys makes finding ways to stay online tricky — not to mention making my homestead smarter.

Abstract: Optical power meters (OPMs) are elementary devices, necessary in a wide variety of applications to determine the power of incident light. As an alternative to costly commercial devices, very ...

“2000 Meters to Andriivka,” “Afternoons of Solitude,” “Come See Me in the Good Light,” “Cover-Up,” “The Perfect Neighbor,” “Put Your Soul on Your Hand and Walk” and “Seeds” have been nominated as the ...