Consider a bulb's Kelvin temperature. There are two major ways to differentiate between types of light: The Kelvin temperature (this measures the warmness or the coldness of the white light spectrum) ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you've ever assumed that all light bulbs are the same, think again. There's a broad spectrum of light ...

If you aren't a fan of yellowy tinted light, then a neutral, white-toned "daylight" LED is just what you need. Here's how to ...

Is there a sufficiently reliable way to get an acceptable measure of the actual colour temperature of the the light generated by an LED bulb, using generic hardware and/or software? Maybe there's an ...