Batman
6 of 7 from Photos: Battle of the Rube Goldberg machines
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The team that nabbed second place chose a "Batman" theme in its complicated approach to replacing a typical lightbulb with a modern, energy-efficient type. Their solution featured visible electrical energy, such as the visible contained electrical arc in the center.
April 2, 2009 3:30 PM PDT
Photo by: Andy Colwell/Pennsylvania State University
