Re: A Hole through Earth?

Henry Lemington-Wholeflavors <cwocwocwo@xxxxxxxxxxx> wrote:
>
> Steven Gray wrote:
<snip>
>> I haven't done the calculation, but it may well be substantial.
>> The pressure that we have at the surface results from a column of air
>> only about 100 miles high, in a field that decreases as 1/r^2 as you
>> go up.
>
> It would be a nice calculation do to. I might try it.

Ballpark.
Air pressure doubles (in the lower atmosphere) about every 6Km.
Go down another 600Km, neglecting the diminuition in gravity, and
you're at way beyond where air behaves like a gas, and it's
more like a liquid.
You can't breath this.
Once you get down to -12Km or so, you're going to need breathing gear
in order to survive long term, as you risk stuff like nitrogen narcosis,
not to mention oxygen toxicity.
You can go down a bit more than this, but well before -100Km (neglecting
temperature) your body simply stops working in various ways that can't
be bypassed due to things like protiens deforming under pressure.
.

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