12 toys of Christmas: 8 Etches Sketching
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If you are like most people, the best thing you can draw on an Etch A Sketch is a staircase- not a personal portrait or a rendition of a popular painting. The popular Etch A Sketch is a beloved toy that both intrigues and frustrates its users. The challenge to create a picture by turning two knobs can keep you busy for hours. If you really mess up your design, you’ll have to shake it clean so you can start all over again. What exactly gets shaken up, you ask?
Inside each Etch A Sketch is a bunch of aluminum powder which sticks to the screen. The knobs move a little stylus which displaces the aluminum powder on the screen to reveal dark lines. When the Etch A Sketch is shaken, the beads of aluminum powder redistribute themselves evenly over the screen leaving a clean drawing board.
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