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Practical Scanning Electron Microscopy - Electron and Ion Microprobe Analysis (Paperback, Softcover reprint of the original 1st ed. 1975)
Loot Price: R2,879
Discovery Miles 28 790
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Practical Scanning Electron Microscopy - Electron and Ion Microprobe Analysis (Paperback, Softcover reprint of the original 1st ed. 1975)
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In the spring of 1963, a well-known research institute made a
market survey to assess how many scanning electron microscopes
might be sold in the United States. They predicted that three to
five might be sold in the first year a commercial SEM was
available, and that ten instruments would saturate the marketplace.
In 1964, the Cambridge Instruments Stereoscan was introduced into
the United States and, in the following decade, over 1200 scanning
electron microscopes were sold in the U. S. alone, representing an
investment conservatively estimated at $50,000- $100,000 each. Why
were the market surveyers wrongil Perhaps because they asked the
wrong persons, such as electron microscopists who were using the
highly developed transmission electron microscopes of the day, with
resolutions from 5-10 A. These scientists could see little
application for a microscope that was useful for looking at
surfaces with a resolution of only (then) about 200 A. Since that
time, many scientists have learned to appreciate that information
content in an image may be of more importance than resolution per
se. The SEM, with its large depth of field and easily that often
require little or no sample prepara interpreted images of samples
tion for viewing, is capable of providing significant information
about rough samples at magnifications ranging from 50 X to 100,000
X. This range overlaps considerably with the light microscope at
the low end, and with the electron microscope at the high end."
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