You could fill it with co2 .put an animal bladder on the mouth of a clay bottle where something is fermenting like wine or beer. The yeast will produce a fair ammount of c02 and fill the bladder. Use the bladder to fill the bulb. It wont last long but it will be longer than just air
Lightbulbs are pretty easy to make if you:
If you could find a way to fill the lightbulb with a noble gas as you insert your filament, i think decent life is reasonable.
I don’t even know where to get that here never mind in times of yore
One way is the fractional evaporation of liquid air until all that’s left are the noble gases. Or chemical extraction.
You can also use a sacrificial gas that burns off before the filament. Saw it in a youtube video https://youtu.be/ThBkzEfjVl0?si=gJW8JyD8KM1Y5Ye8
Here is an alternative Piped link(s):
https://piped.video/ThBkzEfjVl0?si=gJW8JyD8KM1Y5Ye8
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I’m open-source; check me out at GitHub.
You could fill it with co2 .put an animal bladder on the mouth of a clay bottle where something is fermenting like wine or beer. The yeast will produce a fair ammount of c02 and fill the bladder. Use the bladder to fill the bulb. It wont last long but it will be longer than just air