--We know too many things that we don't understand.

When we use a pencil, the question never arises, "Who was the first to apply scientific discoveries to a round object measuring ± 20 cm called a pencil?"

Yes, to get to know pencils too well, we first know that the idea of ​​making pencils was discovered by Nicolas Jacques Conté, a painter and scientist from France.

When we burn wood or other waste until it becomes charcoal, can we produce a pencil?

The answer is maybe. But before creating a new pencil, let's first know the origin of the pencil.

Pencils are made from graphite, a type of shiny black carbon mineral. To glue the particles together, graphite is mixed with clay as a hardener and wax as a binder. To prevent hands from getting dirty when used and to add appeal, the pencils are wrapped in wood and colorful paper.

Is using a pencil dangerous?

Even though pencils are often referred to as lead, which means tin or lead, pencils do not contain lead at all.

Why is there a Special Exam Pencil?

Not all pencils are recommended to be used to fill out forms that will be checked using a computer system, such as national school exams, college entrance exams, TOEFL exams, and various other similar exams. Several brands on the market are often recommended. Of course, the reason is quality.

The quality of a pencil is judged by the color it produces. The more perfect the dark color the pencil produces, the more preferred the pencil is.

The perfect color is obtained from the greater number and density of graphite particles that are etched into the paper. Really? Still remember, above it was mentioned that pencils are made from three main compositions: graphite, clay, and wax. The more graphite there is in the composition, the softer the pencil and the more freely its particles will scratch on our paper. So, it's not because the natural color of black graphite is different.

Apart from the perfection of the dark color of the pencil, another thing that causes certain brands of pencils to be recommended for exams is because of the shiny nature of the graphite which can reflect light from the dots of the exam paper which is then detected by the scanner in the exam results checking machine. If the machine detects an incorrect paper circle, the machine will automatically count the number of errors.

So, the greater the percentage of graphite in the pencil composition, the more graphite particles there are which provide a dark color and reflect light for the scanner. But graphite cannot work perfectly without the presence of its two friends, clay and wax. The three of them are united in a container called a pencil.

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