Watts and lumens — they both describe lightbulbs, but do you know what they actually mean? Did you know that wattage is no longer a reliable way to tell how bright a bulb is? Do you know what makes ...

Lumen is a measure of brightness in LEDs. I am gradually switching to LED bulbs at home. I believe that’s the way to go if you want to trim your electricity bill. These bulbs are super efficient in ...

Alina Bradford has been writing how-tos, tech articles and more for almost two decades. She currently writes for CNET's Smart Home Section, MTVNews' tech section and for Live Science's reference ...

Q I keep reading articles and hear people talk about lumens from a light bulb and watts from a light bulb. I’m told that if I buy a compact fluorescent lamp, that swirly light bulb, that I have to get ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. But what are lumens? We used to measure light brightness in watts, but now LEDs are the dominant ...

Light bulbs will no longer be labelled in watts under new EU rules. It has decided to replace the energy measurement - named after the 18th century British inventor James Watt - with 'lumens', which ...

Planning your lighting for a photo or video shoot can be complicated, and the terminology used to measure light in lighting equipment can make things even more confusing. When shopping online, most ...

America’s ban on incandescent light bulbs, 16 years in the making, is finally a reality. Well, mostly. A rule issued in 2007, rolled back by the Trump administration, and updated last year by the ...

Progress in the LED lighting industry can best be measured in two separate metrics: pricing and efficiency. Pricing gets most of the attention, but so many factors affect it -- from the cost of ...