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In addition to the filament material, Edison's research program also worked tirelessly on improving vacuum technology. Getting electric current into a glass bul
by analog31 1y ago
In addition to the filament material, Edison's research program also worked tirelessly on improving vacuum technology. Getting electric current into a glass bulb without leaks or cracking due to thermal expansion, and keeping the air out, are no small feats.
- peterfirefly 1y agoThey started by improving vacuum pumps and getting several patents on that. This was before the invention of the getter, so the pumps had to do all the work.
- analog31 1y agoAh, the getter. Another materials problem. ;-)
- peterfirefly 1y agoGetters are fascinating. I read a bit about the type they use for the LHC...