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A scanning transmission electron microscope (STEM) is a type of transmission electron microscope (TEM). Pronunciation is [stɛm] or [ɛsti:i:ɛm]. Pronunciation is [stɛm] or [ɛsti:i:ɛm]. As with a conventional transmission electron microscope (CTEM), images are formed by electrons passing through a sufficiently thin specimen.
Many organizations in the United States follow the guidelines of the National Science Foundation on what constitutes a STEM field. The NSF uses a broad definition of STEM subjects that includes subjects in the fields of chemistry, computer and information technology science, engineering, geoscience, life sciences, mathematical sciences, physics ...
Invented by Adrien Philippe in 1842 and commercialized by Patek Philippe & Co. in the 1850s, the stem-wind, stem-set movement did away with the watch key which was a necessity for the operation of any pocket watch up to that point. The first stem-wind and stem-set pocket watches were sold during the Great Exhibition in London in 1851 and the ...
steam turbine A rotating machine that converts the energy of expanding steam to mechanical power through its interactions with sets of moving and stationary blades. step response The behavior of a control system in response to an abrupt change of input. stepper motor
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Spatiotemporal Epidemiological Modeler, free software; Stem, part of a compound variable in the Rexx computer programming language; Stem (bicycle part), connecting the handlebars to the steerer tube of a bicycle fork; Stem (ship), the most forward part of a boat or ship's bow; Stem, part of a watch
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