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I love running 40V across 0.5mm pencil lead and watching it evaporate into gas in a flash of blinding white light :)
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Keeping playing with it and sooner or later you'll invent the light bulb.
The first light bulb filaments were carbon. I'm sure they did exactly what you did and thought, "Gee, that lit up the whole room. If we could only keep it going."
Thus the vacuum bulb to keep oxygen from burning it up.
@Pat @freemo @Ianhorsewell
That's what the nerds come up with …
And then the business suits enforced their Adult Supervision:
"Gee, if we build vaccum bulbs as good as we can, we can't keep selling crappy ones"
https://en.wikipedia.org/wiki/Phoebus_cartel
keep playing with it*
(not keeping)
@freemo @Ianhorsewell