What's the Distinction Between LED and Incandescent? Gentle-emitting diode (LED) and incandescent mild bulbs produce light using completely different applied sciences. A conventional incandescent bulb produces gentle by passing electricity by way of a tungsten filament surrounded by inert gases to heat the filament to approximately 4,000 degrees Fahrenheit. An LED consists of two adjoined pieces of semiconductor materials. Energizing an LED causes movement of electrons across the diode, which emits photons or gentle. Incandescent bulbs are inexpensive and produce good gentle, however they don’t final long. The high temperatures passing through the filament trigger it to break down over time. As well as, EcoLight they're inefficient