ANTarctica Fourmilab South Pole Expedition January, 2013

And Home

Madrid's very geometrical airport.

Here's a science experiment you can do yourself the next time you're on a shrieking aluminium death tube. At altitude, after you finish your beverage, cap the empty bottle and watch it as you descend. It will be inexorably crushed as the cabin pressure rises from around 2000 metres cabin altitude to that of the airport. This is less than the difference in altitude from the South Pole and sea level.

The twenty-six kilogram duffel, back at Fourmilab.

by John Walker February 22nd, 2013

This document is in the public domain.