Now that I have a way to run electrodes through glass, it's time to do something with that. An old school lightbulb is rather simple: just a thin wire that gets hot enough to glow. However, to produce anything approaching white light, the wire must get to around 2500 C. While conductors like tungsten or graphite can survive those temperatures, they all burn on contact with air. To prevent this, I'll be sealing my lamp in glass under vacuum: no air, no problem. I lied. Some ceramics start conducting once heated, and being oxides, are completely unaffected by oxygen. Open air "Nernst lamps" did enjoy brief popularity in the 1890-1900s, but because of the added complexity of preheating the filament, they were replaced by filament lamps once vacuum pumps became good enough for commercial production. https://en.wikipedia.org/wiki/Nernst_lamp: those lamps. https://www.youtube.com/watch?v=-spTvp5-sf0: Using one. To start, I bent some some 0.3mm diameter tungsten wire into a "U" shape, and…
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