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Do you just want to experiment, need a special light bulb or imagine you can save a load by making your own.
Youtube has several videos of how they are made.
Youtube has several videos of how they are made.
Mar 15, 2011. 7:55 PMRe-design
says:
Blow a glass bulg.
Insert a tungsten filament and lead wires.
Vacuum out the air or fill with argon etc.
Seal the bottom and "light it up".
Insert a tungsten filament and lead wires.
Vacuum out the air or fill with argon etc.
Seal the bottom and "light it up".
Better to fill with argon at some non-trivial pressure. Under vacuum, the filament is more likely to sublimate.
Or helium, I like his reasoning.
http://www.periodictable.com/PopSci/2005/12/1/index.html
http://www.periodictable.com/PopSci/2005/12/1/index.html
Mar 15, 2011. 7:56 PMRe-design
says:
You could do this using a lab beaker, rubber stopper etc.
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