| electron m. |
the photograph of an object through an electron microscope.
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| electron paramagnetic r. |
in spectrometry, a measure of electron spin as an indication of the presence and extent of activity of free radicals in an organic reaction. Abbreviated EPR or ESR.
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| electron r. |
a technique in which a latent electron image is produced on clear plastic by passing x-ray photons through a gas with a high atomic number; this image is then developed into a black-and-white picture.
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| electron s. |
a stream of negatively charged particles (electrons) moving from cathode to anode across a potential difference in a low-pressure gas tube or a vacuum tube.
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| electron s.’s |
substances containing heavy atoms, such as osmic tetroxide, uranyl, and lead ions, which, under certain conditions, act as “electron stains,” comparable to histologic stains, by combining selectively with certain regions of the specimen; used in the visualization of the ultrastructure.
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