Incandescent

Perhaps the most commonly known of all lighting solutions, the incandescent lamp was the first “bulb” of its kind to be brought to a mass market. Over twenty-two inventors and scientists can hold some small claim to contributing in the evolution of this lighting solution; however it was the design by Thomas Edison that became known as the most effective and therefore commercially viable because of its advanced incandescent material make-up and vacuum system. The great advantage boasted by incandescent lamps is that they are relatively inexpensive to buy and easy to find, but these positives however do come with some negatives. As much as 90% of the power consumed by an incandescent lamp produces heat rather than visible light, which does not make them very energy efficient, which results in the lamps needing to be replaced more frequently than other lighting solutions (around every two thousand hours).