(09-21-2015, 10:43 AM)JoeP Wrote: - pressure could also be equal to internal living quarters, meaning a breech won't be deadly...slow leaks are easy to deal with.
I'm not so sure. Atmospheric pressure on Venus is 92 times that of Earth! I'm not entirely sure, but I doubt humans could deal with that. At such pressures, just the act of inhaling and exhaling would be a Herculian feat. If anything, Venus would be more challenging than space in that regard. In space, the pressure differential is just 1 atmosphere. On Venus it would be a whopping 91 atmospheres, so the habitat's walls would have to be extremely strong.
Feel free to correct me if I'm wrong.
EDIT: Ok, at the altitude at which these floating cities would hang out, the pressure would probably be a lot lower.
EDIT #2: Yep. Just read on Wikipedia that at an altitude of 50 km, the pressure would be exactly 1 bar. So you're absolutely right.