Getter is a small chemical vacuum pump, which is activated after/during regular vacuum pumping. There are several types of getters, here I have tested a big evaporable getter. I have pumped out the air from the tube, then activated the getter and sealed off the tube. After enjoying the mirror finish a bit, I broke the seal and let the air get inside, to see how fast the metal layer will oxidize - It took almost two days.
  • Year: 2015
  • Project: Light bulb element experiment

Activated evaporable getter in a glass tube
Activated evaporable getter
Getter capsule
Getter capsule inside
A hour after the seal was broken
A hour after the seal was broken
Glass metal seal and additional wires for filament
Two days later, metal layer is completely oxidized

Next Project - "Glass Lathe Jig"