Voyage to Our Hollow Earth - 24 Day Trip (you've *gotta* see this!)

memepool ^ | He didn't type in the "Stardate" | Rodney M. Cluff

[boris]

"Well, at the core, there'd be zero effective gravity, so I'd imagine that the air pressure would be rather low, since for some distance above the core, I suspect the effective "source" of gravity would be upward, reducing any downward pressure at the air at the bottom of the hole."

Wrong.

The equation of hydrostatics says P = Integral from 0 to radius of earth of rho(r)*g(r)dr. G(r) is easy; it is zero at the center but non zero at all other radii. I believe it is a linear function with radius.

Rho(r) is the density of the air which is stronly non-linear and requires a very robust equation of state.

One hundred miles of air over our heads produces 14.7 psi. Earth's radius is 6378136 meters or 3963 miles.

There is the solution. All you need is a (non-ideal gas law, eg a "real gas" law) for the equation of state of air.

Go to it, genius.

--Boris

[Orange1998]

Great. Another ticket on the titanic.

[AF68]

So, for $18,950 to $20,950 the traveler gets a 24 day trip on a rusty Russian icebreaker, in freezing Arctic temperatures, looking for a hole in the Earth that doesn't exist, and a guaranteed look at some Walrus bones on a Siberian island. Riiight! They may even get a chance to observe Planet X whizzing by the Earth. Sheesh!

[Big Digger]

Yes, mine is hollow, and thanks for asking.