After two years of analysis, West and Bettencourt discovered that all of these urban variables could be described by a few exquisitely simple equations. For example, if they know the population of a metropolitan area in a given country, they can estimate, with approximately 85 percent accuracy, its average income and the dimensions of its sewer system.
PLoS is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.
Kernphysik mit Kikka - Die wunderbare Welt von Isotopp
Lexikon des Unendlichen: Unendlichkeit, Ewigkeit und Unbegrenztheit in Physik, Astronomie, Mathematik, Philosophie und Religion
