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Field-emission microscope

Field-emission microscope

(Science: instrument, microscopy) Either one of two kinds of point-projection microscopes, both invented by E. W. Muller: (1) The older device (1936) is a specialised cathode-ray tube, employing field-emission of electrons from a negatively charged tip of a very sharp needle in a vacuum, by point-projection of the image onto a positively charged, fluorescent screen. (2) a later device (field-ion-mission microscope, 1950) emits absorbed helium ions from an anode.

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Please help me decide which microscope to buy

I'm not sure what an inverted microscope is, but if you're looking at unstained cells, some special beam arrangements should be there - phase contrast, dark field, something...

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by Darby
Wed Nov 06, 2013 6:42 pm
Forum: General Discussion
Topic: Please help me decide which microscope to buy
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Views: 864

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by AlanGarden
Mon Apr 29, 2013 10:52 pm
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help please 1

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Thu Feb 16, 2012 2:30 pm
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by Squirrell
Wed Feb 15, 2012 1:34 am
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