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I was born in Australia but grew up in England http://thumbzilla.fun thumbzilla  In previous experiments, however, the 3D structure of the emitter was destroyed at temperatures of around 1800 F (1000 C). To address the problem, Braun and his Illinois colleagues coated tungsten emitters in a nanolayer of a ceramic material called hafnium dioxide.
Aidan 2019-05-29 16:06:19

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