Maybe presence of acid vapor? But this sounds possibly too sensitive to be usefu... | Hacker News

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		dgoldstein0 on June 7, 2019 \| parent \| context \| favorite \| on: A mysterious crystal that melts at two different t... Maybe presence of acid vapor? But this sounds possibly too sensitive to be useful.

jacobush on June 7, 2019 [–]

I was thinking in space... measuring the corona of a comet or something. Anywhere you have a very faint hint of something

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