Traditional incandescent bulbs produce light by heating a wire filament to a temperature that results in a generation of light. Incandescent bulbs were popular because they were inexpensive and available in a wide range of colors. However, much of their energy went into heat production and very little toward emitting light.
Incandescent light bulbs also have a very short lifespan, lasting only about one year on average. Although they are no longer available in U.S. stores, the energy costs associated with the once-popular bulb, along with its stunted lifespan, far outweigh the initial savings at the cash register. Since incandescent bulbs produce a lot of heat, they may cause burn injuries and pose a fire risk.
Nowadays, the three most popular light bulbs are the light-emittings diode (LED), the halogen incandescent and the compact fluorescent light (CFL). LED light bulbs work when an electrical current passes through a microchip, which illuminates the tiny light sources we call LED’s, and the result is visible light. LED light bulbs produce light up to 90% more efficiently than traditional incandescent light bulbs. They also include features that keep the bulb cooler to the touch, which avoids potential injuries and fire risks.