
Small amounts of mercury are an essential ingredient in most energy efficient light bulbs; therefore, all CFL light bulbs should be disposed properly in order to recycle mercury and prevent it from leaching into the environment.
Read more
Add comment (0)
Lighting Knowledge

Despite their incredible energy savings, there is still concern over the mercury content of CFLs. Mercury is a necessary ingredient in the CFL because it is a main component in the process that creates visible light inside the fluorescent tube.
Colors appear differently under different light sources, and the Color Rendering Index (CRI) measures a lamp’s ability to render colors most naturally. It measures the degree of color shift objects undergo when illuminated by a reference source of comparable color temperature. If you’ve ever held up a pair of pants in a store window to see whether they were black or navy blue, then you’ve noticed the difference in the color rendering of the store’s light bulbs and natural sunlight.