[opendtv] Re: Mag-lev

  • From: "John Shutt" <shuttj@xxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Wed, 1 Nov 2006 16:52:19 -0500

This thought experiment is centuries old.

If you're going to ignore wind resistance, rail friction, heat, a molten core, and the non-uniform distribution of mass within the Earth, you can neglect the Earth's rotation as well.

Wiki has a great entry about this, as does Google with about 6.2 million hits under the search "gravity train."

It's a 42+ minute trip from point A to point B, no mater where on the surface those two points are, IF you ignore all the real world reasons why it can't really be done.

Besides, where would you put all the tailings from a pole to pole hole?


----- Original Message ----- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>

I think Tom is right.

Let's say you start at a pole, and you are going straight through the
core to the other pole. Then yes, your path will be a straight shot
through the sphere.

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