Science Memes

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#justposeidonthings (mander.xyz)

submitted 4 months ago by [email protected] to c/[email protected]

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[–] [email protected] 27 points 4 months ago (1 children)

I need supplemental oxygen at less than 1 fathom under water, if I stay there long enough...

[–] raspberriesareyummy 12 points 4 months ago (1 children)

I highly recommend using compressed air over oxygen. Nitrox 100 (pure oxygen) becomes toxic below 5 meters...

1.6 bars partial pressure Oxygen is considered unsafe / hazardous.

[–] [email protected] 7 points 4 months ago (1 children)

Nitrogen also becomes toxic, requiring you to substitute it with helium (or hydrogen).
Interesting talk on the subject: https://youtu.be/skL5EQa8DFY

[–] raspberriesareyummy 3 points 4 months ago (1 children)

It's why I'll always remain happy with recreational diving at depths less than 40m :) Tech divers are a bit crazy imo. Sure, there's nice views to be had (if you bring a lot of light), but it's not worth the risk for me.