Getter Rainbow...
Patterns in the "getter" of a large vacuum tube.The getter is usually some highly reactive metal like cesium, which is added to a vacuum tube as a thin coating on the glass.It reacts with ("gets") any remaining oxygen in the tube...
p.s. see Alan Sailer's comment below...
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Uploaded on September 29, 2011
Taken on September 29, 2011
Getter Rainbow...
Patterns in the "getter" of a large vacuum tube.The getter is usually some highly reactive metal like cesium, which is added to a vacuum tube as a thin coating on the glass.It reacts with ("gets") any remaining oxygen in the tube...
p.s. see Alan Sailer's comment below...
1,597
views
9
faves
7
comments
Uploaded on September 29, 2011
Taken on September 29, 2011