Monday, March 09, 2015

Human Cantilever Bridge

 


Boing-Boing republished the above old photo, which I first saw in a Wonder Book, a series of compendiums first published in England sometime in the 1920s, and continued into the 1950s: Human cantilever bridge

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Visual and other illusions

   Visual illusions vary. Some can be controlled. For example, I find that once I’ve seen both images in a dual-image illusion, I can see ei...