The Pencil ! !

The most wrongs beliefs is the pencil is made from plomb but in reality the pencil is made from graphit and water and clay and it's the mixture created by "jack kont"in 1795, And then the eraser has been added to the rear end of the pencils after that date about a century ago. The mechanism of action of the eraser to remove graphite material for paper. The eraser contains some petroleum products and rubber which makes graphite particles stick to paper and rise from being rubbed. Eraser and some types have a greater ability than others to collect graphite so find easier to use and give you better results and cleaner paper when used .