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A comment on What are “actual pictures” of atoms actually pictures of?. Parent comment

Re:What are “actual pictures” of atoms actually pictures of? by joncrocks on Sunday June 26, 2016 @06:46AM (#11980225)
Yeah, we used to use graphite (as flat as we could get it, tried to ensure we had a single surface) to see how good it was. You could tell how good it was from how much noise you got and therefore how good your image was.
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