What's the Distinction Between LED and Incandescent? Light-emitting diode (LED) and incandescent light bulbs produce mild utilizing totally different technologies. A standard incandescent bulb produces light by passing electricity by a tungsten filament surrounded by inert gases to heat the filament to approximately 4,000 levels Fahrenheit. An LED consists of two adjoined pieces of semiconductor material. Energizing an LED causes movement of electrons throughout the diode, which emits photons or mild. Incandescent bulbs are cheap and produce good gentle, but they don’t final long. The high temperatures passing by way of the filament trigger it to interrupt down over time. In addition, they're inefficient