Babbage's Difference Engine by Peter Kwok

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01-JUL-2012

Demonstrating the Difference Engine by 19th century mathematician Charles Babbage at the Computer History Museum

Canon EOS 50D ,Canon EF-S 17-55mm f/2.8 IS USM
1/15s f/5 at 17mm iso800 full exif

other sizes: small medium large original auto

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