1,000 times too faint · All Facts

1,000 times too faint
Humans emit ultraweak visible light from metabolic chemistry — about 1,000 times too faint for the naked eye to see — imaged with cryogenic CCD cameras.
SrcPLoS ONE (Kobayashi et al., 2009)

Next evidence →4%In a controlled pool experiment, humans swam nearly as fast in guar-thickened syrup as in water — times differed by no more than about 4%.

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