Basic supplies include soda-lime glass tubing and pre-coiled tungsten filaments. Support wires are made from Dumet ... and sealed. The bulbs are baked after sealing to drive off any remaining ...

So how about combining the best of both worlds, by using LEDs to make a Numitron ... of orange LED filaments similar to the ones used in vintage-style LED light bulbs. [Jay] bought a bunch of ...

He discovered that a carbonised bamboo filament, housed in a near-perfect vacuum, could glow for up to 1,200 hours. This made Edison's light bulb not only durable but also economical, and this was ...