Why do pencils have fake erasers?

It is simply used for fixing small mistakes in art and writing errors. This depends on how much erasing of the pencil you will need. If you don’t need to erase often then the existing eraser will serve you just fine.

What happened to the pencil when mixed to the eraser?

Erasing happens because of the friction that develops between the eraser material and the paper. Thus, when you rub an eraser on the paper, the resulting friction produces heat. This helps the eraser become quite sticky, stickier even than the paper, so it attracts the graphite particles from the pencil onto itself.

When were erasers put on the end of pencils?

March 30, 1858
On March 30, 1858, Hymen Lipman of Philadelphia, USA, received the first patent for attaching an eraser to the end of a pencil. It was later invalidated because it was determined to be simply a composite of two devices rather than an entirely new product.

Is erasing a friction?

Erasers work because of friction. As the abrasives in your eraser are rubbed against paper, friction produces heat, which helps the rubber become sticky enough to hold onto the graphite particles. As the rubber grabs the graphite particles, small pieces of combined rubber and graphite get left behind.

Why do erasers have two ends?

The blue end is meant for erasing pencil marks on heavy grades of paper or dark marks. The soft end (pink/orange) is useful for light grades of paper which the hard gritted side would tear apart, and also for precision erasing, such as removing a light stray mark from among dark marks.

Is eraser renewable or nonrenewable?

A pencil uses zinc and copper (to make the brass), petroleum for the eraser, iron (in the machinery to make the pencil), pigments, clay and graphite. The only renewable resource in your pencil is the wood.

Why is it called eraser?

And Nairne claimed to have come upon his invention accidentally: He inadvertently picked up a piece of rubber instead of breadcrumbs, he said, thereby realizing rubber’s erasing properties. 4. “Rubber” actually gets its name from erasers.