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in reply to Re^3: The best object to provide scale on a photo showing a small object is:
in thread The best object to provide scale on a photo showing a small object is:

exactly. I think you really only have 2 choices. The electron for the particle physicist, and the galactic black hole for the astrophysicist (to differentiate 'small' galaxies/clusters from 'big' ones) Does anyone really care about anything in between?

fnord

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