Comment on In 2025, People Will Try Living in This Underwater Habitat
merde@sh.itjust.works 4 days ago
Because of its narcotic effect at high pressure, nitrogen shouldn’t be breathed by humans at depths below about 60 meters. So, at 200 meters, the breathing mix in the habitat will be 2 percent oxygen and 98 percent helium. But because of its very high thermal conductivity, “we need to heat helium to 31–32 °C to get a normal 21–22 °C internal temperature environment,” says Rick Goddard, director of engineering at Deep. “This creates a humid atmosphere, so porous materials become a breeding ground for mold”.
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tdawg@lemmy.world 4 days ago
So everyone is gonna sound like mice when they get crushed under the weight of the ocean?
NaibofTabr@infosec.pub 4 days ago
Hmm… maybe not? The low density of helium at 1 atm is what causes the amplification of higher frequencies in the voicebox, but in a pressurized container the gas would be higher density so it might offset the effect… I think?
FeloniousPunk@lemmy.today 4 days ago
If the original SeaLab tests in the 60s were any indication, YES. Check out Scott Carpenter’s voice on this recording with LBJ. www.dailymotion.com/video/x3wkh6s