Lamp lumen depreciation is a factor used by lighting designers to predict the depreciation in light output for a specific light source over a defined period of time. Defining the specific lamp lumen depreciation depends on the type of light source, such as metal halide, fluorescent or LED. Read more.
We often talk about how high-quality lighting can promote productivity, comfort, and well-being. Now this concept has been incorporated into a credit in the newest version of LEED. Read more.
I encounter confusion about color and light almost daily. It used to be so easy to buy a "light bulb..." Now you practically have to be a scientist. Let’s break it down into two simple parts. Think of these as how the light looks and how it feels. Read more.
Have you ever noticed that over time, a nice white light can turn pink or blue or green? Have you noticed a difference in colors when you install a new lamp next to an old one? What you are seeing could be color shift, and although some are worse than others, all sources do it to some degree. Read more.