Image credit: Ben Wouters at Tallbloke’s Talkshop, modifications by me.


The Physics of a Bottomless Pit

Posted by Ethan Siegel on February 27, 2013

“Where you used to be, there is a hole in the world, which I find myself constantly walking around in the daytime, and falling in at night.” -Edna St. Vincent Millay

I’m sure you’ve thought about it before: what would happen if you dropped something into a bottomless pit?

No, not one of those fake bottomless pits that you find in various Mystery Spots off the beaten trail.

Those may be deep, but they’re definitely not bottomless. And I want something truly bottomless. To get that, we’d have to use our imagination, and pretend there were somehow a cylindrical shaft that extended all the way down, past the Earth’s crust, mantle, and inner and outer cores, all the way to the center of the Earth, and then that continued back out to the other side, most probably into the ocean if you live on a continent. (These are known as antipodal points.)

Read more: The Physics of a Bottomless Pit – Starts With A Bang.

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