Quote Originally Posted by DarkstaR View Post
Who says it's not a vaccuum? While the initial energy cost to develop the system would be massive, it would be totally efficient. The math works and the riders will not experience ANY G-forces.

Obviously it is a crazy idea, drilling a hole that deep, precise, and wide, but it's an interesting concept.
But making something like that vaccuum is just impossible
And the energy that would be needed would be insanely everytime.

Your idea about the propeler is a little strange too Like you see on the picture the largest amount of the energy of the electric field is being converted into heat not motion at the end. Better just put a connect the cabbine to a pole like a rollercoaster then and maybe put a plane engine on it

Best system to keep something floating like this is imo the use of superconductivity (meissner) like the maglev train does. But that also requires a lot of electricity and cooling And when I think about it, cooling on that depth is nearly impossible too, but more doable then vaccuum. haha

So I guess the only thing is the rollercoaster, atleast thats what I think

Ofcourse only if we assume we would be able to drill a hole like that, keeping in mind that the deepest one was a 20 cm hole (9inch) of like 12km (7.5 miles) deep.(looked it up!) And the diameter of the earth about 1000 as much


Conclusion : musk is a dreamer and there is nothing wrong with that especially if you are rich as the earth deep is And I guess he could do better things for science then this or his asteroid mining idea

Also
Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25°C per km of depth (1°F per 70 feet of depth) in most of the world
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