INVENTIONS

SCISSORS:

Scissors can be defined as hand implements that use two blades for cutting materials such as paper, cloth, thread, food, hair, etc. The cutting action is created by the shearing motion of the two blades moving against each other, such that the cut moves horizontally while the fingers and thumb of the hand move vertically.
The earliest devices that can be loosely described as scissors were probably made in Egypt in around 1500 BCE. These comprised a single piece of bronze metal formed into a U shape, with the ends of the U sharpened into blades and the curve acting as a spring so that the blades moved apart on release after each cut.

SILVIA