How do rubbers/erasers work?

Question

Not rubbers/condoms, rubbers/erasers

Answer 1

Consider the three elements; the paper, the graphite, and the eraser. The surface of the paper is comprise of ridges and bumps, microscopically. When you write on the paper, graphite is worn off the pencil tip, the graphite particles interlock with the ridges on the paper. Then comes the eraser. The eraser’s surface is something that the graphite likes to stick to more than paper. As the eraser is rubbed and worn on the page, most every graphite particle it touches has a better bond with it than the paper. The eraser “dust” that is left over is worn off eraser particles with graphite stuck to it.

Ink erasers work differently. Ink penetrates the fibers of the paper and an ordinary pencil eraser does not remove the ink. Ink erasers are much harder than pencil erasers and remove ink from paper by abrading the paper fibers coated with ink and thereby removing the ink marking.

Answer 2

this is a really silly question but oh well you draw, wright whatever with a PENCIL ONLY and then you take your eraser or rubber and move it backward and forward to remove a mistake you have made

Answer 3

when you rub them, they create friction which creates heat which rubs pencil off. Also, the molecules of led get stuck to moleculles of rubber because the rubber is sticky but not when we touch it.

Answer 4

They remove the pencil ink by friction. If you rub it on the same spot for a long time, the paper will have a hole.

Answer 5

Erasing with erasers is merely a matter of employing friction.  As neither the paper nor the eraser is lubricated, there is a chafing motion.  You are not erasing the pencil marks.  You are quite literally removing the top layer of the paper.  That is where the pencil marks are so they also "disappear".  When using a soft eraser you will notice that quite a bit of eraser has been scraped off as well.  That is ideal.  Hard erasers take off far too much paper.

With thick paper, you might be able to remove ink from a ballpoint pen.  With absorbent ink (highlighters, sharpies, etc.) there is no hope for erasure - use a whitening fluid or tape.

Answer 6

you move it back and forth and good bye pencil

Answer 7

they create a barrier so that the sperm does not reach the egg

edit : sorry my mistake