ChatterBank0 min ago
How does a rubber do it so well?
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For more on marking an answer as the "Best Answer", please visit our FAQ.marmaduke, how can you find the use of a pencil eraser "astonishing" ?
Tcchh ! Kids today! A pencil was all we were allowed to write with up until the age of thirteen, when we graduated to a fountain pen.
Now I'm a big boy, they let me write with a green wax crayon, as they don't allow sharp objects in this place.
Well, a pencil works by leaving tiny graphite flakes on the paper, which we see as a black or grey line. An eraser is a soft rubber abrasive, which scrubs the top layer of paper and removes a little of paper together with graphite particles. Clumps of used rubber, mixed with paper and graphite are produced. If you keep erasing you will eventually wear a hole in the paper.