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General Science / Re: Oxygen levels In A packed Train. Is There Always Enough ?
« on: 06/02/2025 17:01:06 »My word, there were days it was soooo packed it was a joke.

Imagine these guys stuck in a tunnel for long, and not even a loo
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People really enjoying their commute last Tuesday. see how they smile ?The foreground guy suspects that Ophelia there is doing something inappropriate, yet the offending grope origin actually is from the smiling guy just beyond him.
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With a stationery packed train stuck in tunnel, what are the chances of oxygen deprivation ?The tube, like any tunnel, is supposed to have continuous ventilation to deal with anything not moving, and also to carry away exhaust fumes. Not too much the latter in an electric subway, but think of the old days of steam trains going through long tunnels, windows shut due to the smoke of the engine. Tunnels could only get so long back then.
Lots of people stuck in say a 747 for 6 hours on the ground (done that) with ventilation that only works significantly when the thing is in the air.* Nobody passed out for lack of oxygen, but the temperatures went through the roof. They let first class off, but not the cattle sections.
(*) that sentence had no verb
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