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Back-of-the-Envelope Physics

Back-of-the-Envelope Physics

The author is the winner of the 2007 Melba Newell Phillips Award given by the American Association of Physics Teachers. Earlier he was awarded their Oersted Medal

Physicists use "back-of-the-envelope" estimates to check whether or not an idea could possibly be right. In many cases, the approximate solution is all that is needed. This compilation of 101 examples of back-of-the-envelope calculations celebrates a quantitative approach to solving physics problems. Drawing on a lifetime of physics research and nearly three decades as the editor of The Physics Teacher, Clifford Swartz provides simple, approximate solutions to physics problems that span a broad range of topics. What note do you get when you blow across the top of a Coke bottle? Could you lose weight on a diet of ice cubes? How can a fakir lie on a bed of nails without getting hurt? Does draining water in the northern hemisphere really swirl in a different direction than its counterpart below the equator?

In each case, only a few lines of arithmetic and a few natural constants solve a problem to within a few percent. Covering such subjects as astronomy, magnetism, optics, sound, heat, mechanics, waves, and electricity, the book provides a rich source of material for teachers and anyone interested in the physics of everyday life.

Back-of-the-Envelope Physics
Publication Date: 2019
Status: Available
Usually ships 2-3 business days after receipt of order.
Trim Size: 5.5" x 8.5"
Page Count: 176 pages
Illustrations: 25 line drawings
ISBN: 9780801872631
Subject: Physics