"LED light sources with good color characteristics are now commonly rated for 120-150 lumens/watt," McGowan says. That's ten ...

In this scheme sunlight and incandescent bulbs have a value of 100, which is ideal. Other white-light sources reproduce the colour of objects with varying degrees of perfection, signified by a ...

The elder Maxim is one of several people who claimed they had actually invented the incandescent light before Edison. The courts eventually decided that some of Edison’s claims were preempted by ...

bulbs is that incandescent lights use a filament that heats up to produce light, while LED lights operate by passing an electric current through a microchip, illuminating tiny light sources called ...

CFL’s emit more UV light than incandescent bulbs did. Fluorescent bulbs emit varying levels of ultraviolet radiation, so look for those that emit the lowest amounts of UV radiation and try to use ...