.:madworm:.'s photos with the keyword: flash getter

Ice Tube clock - VFD macro

26 Sep 2009 128
Interference fringes of a thin film. I guess some of the getter material (e.g. Barium) deposited there.

Ice Tube clock - VFD macro

26 Sep 2009 177
Getter material evaporated and deposited on the glass. In physics sometimes a so called "titanium sublimation pump (TSP)" is used for ultra high vacuum systems. Titanium has a high "sticking coefficient" and gas just sticks to it. There's also ion getter pumps being used for just holding the pressure.