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Posted by pmb on July 23, 2000 00:55:14 UTC

Nope. Never.

I was unsure as to how the questioner got that idea. I was mentioning the definition in case the questioner had arrived at his conclusion due to a misunderstanding of the term "critical mass."

I came across another definition in the mean time. I saw it used (can`t recall where) in cosmology. It was defined as the mass of the universe where above it the universe is open and below it the universe is curved (i.e. that mass which makes the universe flat).

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