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Hacker News
Visible Spectra of the Elements
36 points
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by
djoldman
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last Tuesday at 12:54 PM
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2 comments
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view on HN
Comments
SiempreViernes
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today at 4:46 PM
This is really cool!
esafak
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today at 6:24 PM
A fun way to fingerprint substances.
alt Hacker News
This is really cool!