How to choose pencils for yourself?
Speaking of pencils, everyone is familiar with them. When I was young, almost everyone used a pencil to write the first word in their life. Many things in the world originated from a pencil. For example, a building or an artwork was drafted with a pencil. But do you really understand this stationery that is closely related to our lives? Today, let me give you some popular science. 1\ The history and origin of the pencil 1564 People accidentally discovered the world's purest graphite deposits in a mine near Cumberland, England, and they began to mark them. Slowly, people discovered that graphite is an ideal material for writing. It is not only easy to draw dark marks on paper, but also can be used for more precise work by sharpening it, and it is not easy to break. Initially, graphite was sold in its original form, so it had many shortcomings, such as easy soiling of hands, fragility, and so on. So in response to these problems, many pri...
