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Adding local short description: "Mathematical function in general imaging", overriding Wikidata description "in general imaging" |
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{{Short description|Mathematical function in general imaging}}
[[File:Contrast transfer function.jpg|thumb|Power spectrum (Fourier transform) of a typical electron micrograph. The effect of the contrast transfer function can be seen in the alternating light and dark rings (Thon rings), which show the relation between contrast and spatial frequency. ]]
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