Starting in January, the common incandescent light bulb becomes illegal, well maybe, in most of the United States. (Some recalcitrant states, SC and TX to name two, seem hell bent on reminding the federal government of the long forgotten 10th Amendment to the U.S. Constitution, but wasn’t that fight settled a long time ago?) Advocates of this law say that it encourages the use of more energy efficient lighting sources such as CFL and LED lights. It has been noted that a large fraction of the energy consumed by an incandescent light bulb goes to create heat and not light, and that the newer, high tech devices produce an equal amount of light using less energy.