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The emergence of flatiron The first electric iron is heated by an electric arc between carbon rods and that was very dangerous. In 188... -
Better view Contact lenses are small-sized lenses worn over the eye for clear vision. First thought of the lenses is Leonard da Vinci ... -
Shut them down to the top In 1893, the Atkomb for Judson American inventor invented the zipper slider. Think of this invention as a mean...