There are still practitioners of course, like [2SC1815] who is learning how to make homemade incandescent light bulbs. The Instructable ... with molten glass. The filament is crimped to the ...

As the filament gets hot ... Of course, this inefficiency is why there’s been a move to ban incandescent bulbs in favor of LEDs, fluorescents, and other technologies. LED lights, in contrast ...

Incandescent bulbs are cheap to produce ... founder of LED Light Expert. There's no filament and almost no heat: "90% of the energy LEDs use is converted into light," Greaney says.

Born in Sunderland, he studied chemistry and moved to Tyneside where, after many years of persistent effort, he created the first successful 'incandescent filament electric lamp' - the light bulb.