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- Eraser, also known as Rubber, is a tool which is used to remove marks from paper, white/blackboards or skin.
- They come in many shapes and types such as hexagonal, triangular, rectangular and squared.
- Erasers are made from rubber plants.
- When an eraser is used on blackboard or whiteboard, it is called as duster.
- After the development of a process called, ‘Vulcanisation’, by Chareles Goodyear, erasers became popular.
- Edward Nairne is credited with the development of the first Eraser in 1770.
- Synthetic rubber is mainly used for manufacturing erasers, however with the increase in price other chemicals such as vinyls are also used.
- When an eraser is used to clear pencil marks, it produces a black dust called debris.
- Attempts have been made to patent the design of erasers attached to one end of pencils but were not approved.
- With recent improvement, pen erasers have also been developed.