Tuesday, July 12, 2011

July 12, 1960: Etch a Sketch Goes on Sale

via wired
“The technology behind this children’s toy is both simple and complex. Simple, in that an internal stylus is used, manipulated by turning horizontal and vertical knobs to ‘etch a sketch’ onto a glass window coated with aluminum powder. Complex, because the Etch a Sketch employs a fairly sophisticated pulley system that operates the orthogonal rails that move the stylus around when the knobs are turned…”
Read the rest here, and view a gallery of images here. As a child, I was fascinated by the silver powder inside of Etch-a-Sketchs.

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