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2016
March
Neat News 2016-75 (added 2016-03-15)
Curly Ribbons Explained
© Lainey Powell
| Scientists explain that ribbons can be made curly by the blade of a scissor because they are bent around the blade which stretches the outermost side more than the side near the blade. They are stretched more and in consequence are more curly when the movement is slow. |