Incandescent tube light bulbs are suitable for many residential and commercial lighting applications. The versatile light bulbs are compatible with night lights, signs and scoreboards, and microwaves. Tube lights are available in a variety of styles, wattages, and finishes such as black, frost, and white. Black lights are suitable for commercial applications such as amusements parks and nightclubs, where they make surrounding colors glow. These light bulbs work with most light dimmers to create your desired level of illumination.