Eraser Clip Art
An eraser is a staple tool in every student’s pencil case. From correcting mistakes in a math equation to erasing an incorrect spelling, erasers have been an integral part of learning for generations. Although it may seem like a simple tool, the invention of the eraser has had a significant impact on education and has made learning more accessible.
Before the eraser was invented, people would use a piece of bread to erase pencil marks. Although it might sound strange, bread is still known as the “poor man’s eraser” in some countries. However, the problem with bread is that it is not efficient at erasing and can leave crumbs on the paper. It also doesn’t work well with heavier grades of pencil lead.
In 1770, the first rubber eraser was invented by an English engineer named Edward Nairne. He discovered that a piece of rubber could be used to erase pencil marks. However, the early erasers were not as efficient as the ones we have today. They would often smudge the pencil lead instead of erasing it cleanly.
In 1858, Hyman Lipman, an American inventor, received the first patent for an eraser attached to a pencil. This innovation made erasing mistakes easier and more convenient. Lipman’s patent was a game-changer in the world of education, as it allowed students to erase errors as they went, rather than having to start over with a new sheet of paper.
Today, erasers come in a variety of shapes, sizes, and materials. The most common type is the rubber eraser, which is typically made from synthetic rubber. These erasers work by using friction to erase pencil marks. When rubbed against paper, the surface of the rubber creates heat, which helps to loosen the graphite particles from the paper.
Another popular type of eraser is the plastic eraser, which is made from vinyl or PVC. Unlike rubber erasers, plastic erasers produce fewer crumbs and are best for heavy pencil marks. They are also less prone to smudging and can erase pen marks to some extent.
In recent years, electronic erasers have become popular with artists and designers. These tools use a motorized eraser head and are ideal for precise erasing. They are often used in conjunction with graphic tablets and software.
Although the eraser may seem like a small and insignificant tool, its invention has had a profound impact on learning. By giving students the ability to correct their mistakes easily, it has made education more accessible and less intimidating. It has also allowed teachers to focus on more important aspects of learning, rather than constantly creating new sheets of paper.
The eraser may not be the flashiest tool in a student’s pencil case, but it is undoubtedly one of the most important. From its humble beginnings as a piece of bread to its modern-day iterations, the eraser has had a significant impact on education and has made learning easier for generations of students. Whether you prefer a rubber eraser or a plastic eraser, there is no denying the importance of this small but mighty invention.
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