The latest models of tabletop SEMs (TT-SEMs) feature a range of electron sources. Although a tungsten filament is used in a majority of TT-SEMs, certain models come with a Cerium Hexaboride (CeB 6) ...
ALBUQUERQUE, N.M. — Tungsten-filament bulbs — the most widely used light source in the world —burn hands if unscrewed while lit. The bulbs are infamous for generating more heat than light. Now a ...
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