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		John Tyndall's blue sky apparatus (rigb.org)
		41 points by okket on Aug 3, 2018 \| hide \| past \| favorite \| 2 comments

ChuckMcM on Aug 3, 2018 [–]

Apropos of nothing but this is a simple apparatus that makes for an awesome science fair project.

jsilence on Aug 4, 2018 | [–]

obligatory: https://xkcd.com/1145/

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