Climate change and capital investments Christian Donner, July 1, 2009July 29, 2009 A comment posted in response to an article on Boston.com that predicted yet another day of rainfall:… Continue Reading
Power Factor and Compact Fluorescent Bulbs (CFL) Christian Donner, January 21, 2009November 2, 2009 What is the power factor? What is the power factor of compact fluorecent bulbs? Do… Continue Reading
A low-cost traffic monitoring and data collection system Christian Donner, December 21, 2008August 7, 2019 When I grew up in Europe in the 1970s and 1980s, there was a noticable… Continue Reading
Alpine glaciers are disappearing Christian Donner, August 18, 2007May 3, 2008 This page on the Austrian Greenpeace site has a very powerful flash tool. Move the… Continue Reading