After Nernst lamps fell into obsolescence " Nernst glowers " went on to be used as the infrared-emitting source used in IR spectroscopy devices . ( Recently, even this has become obsolete as Nernst glowers have been largely replaced for this purpose by silicon carbide glow bars or " globars ", which are conductive even at room temperature and therefore need no preheating .)
2.
After Nernst lamps fell into obsolescence " Nernst glowers " went on to be used as the infrared-emitting source used in IR spectroscopy devices . ( Recently, even this has become obsolete as Nernst glowers have been largely replaced for this purpose by silicon carbide glow bars or " globars ", which are conductive even at room temperature and therefore need no preheating .)
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