THEMA: Renaissance of the incandescent light bulb?
Renaissance of the incandescent light bulb?
10 Monate 4 Wochen her #1
A group at MIT showed in a recent publication in...
Everyone knows the problems and the image incandescent light bulbs face. The most grave one is definitely the really bad energy efficiency. Their light emission is done by heating up a filament (mostly tungsten) to 2700 °C. The filament then glows bright white, and its spectrum resembles a black body spectrum a very broad spectrum of light that provides a warm look and a faithful rendering of all colors in a scene. But more than 95% of the energy put into the wire is wasted, predominantly as heat.