The Exploratorium in San Francisco is a magical place, full of inte... ...engineer Tom Tompkins is used to being watched by Exploratorium patrons as he goes about his work. He tells us ab... ...machines they use.“By the time I got to the Exploratorium ,” he continu...http://www.neatorama.com/2014/03/14/The-Government-Surplus-Machines-That-Power-a-Cutting-Edge-Science-Museum/
The Government-Surplus Machines That Power a Cutting-Edge Science Museum...
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