Fine Structure

How Long Until Physics Class KILLS YOU?

Physics Buzz has a great workthrough of a Fermi problem - that is, a question that can be solved generally by making estimations and guesses for parameters.

The question was about how long it would take to deplete the oxygen to uncomfortable levels in a classroom with a certain number of students. Of course, classrooms aren't perfectly sealed and the size of the rooms vary wildly, but it's good to know that it is possible to do within a reasonable amount of time... you'll just have to visit the link to know exactly how long that is.

http://physicsbuzz.physicscentral.com/2009/09/answer-to-friday-fermi-problem.html ]

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