Food poisoning will not happen if you accidentally eat a pencil. It’s supposedly just a mixture of clay and graphite, the tip doesn’t contain any lead.
The mineral- Graphite is a crystallized form of carbon, was discovered in mid-16th century, near Keswick, England. The German chemist, A. G. Werner, named it from the Greek word – graphein, which means “to write.”
Pencil marks are made when tiny graphite flecks, often just thousandths of an inch wide, stick to the fibers that make up paper.
One pencil holds enough graphite to draw a line about 35 miles long or to write roughly 45,000 words. That’s a 450 pages thick book.
The word “pencil” came from the Latin word – penicillus, meaning—“little tail.”
The Frenchmen who supported the idea of a pencil are:Nicolas-Jacques Conté, who patented a clay-and-graphite manufacturing process in 1795; Bernard Lassimone, who patented the first pencil sharpener in 1828; and Therry des Estwaux, who invented an improved mechanical sharpener in 1847.
Another French guy also invented the rubber pencil eraser, Before that, writers removed mistakes with bread crumbs.
Almost all pencils sold in America today have eraser tips, while those sold in Europe usually have no eraser.
Eberhard Faber built the first American mass-production pencil factory in 1861 at New York City .
Union soldiers during the Civil War always bring a pencil with them.
A company founded by British developers patented the 1stmechanical pencil in 1822. During the WWII , Hitler bombed the factory.
Ironically, an American entrepreneur – Armand Hammer , by 1917 ,was awarded a monopoly for pencil manufacturing in the USSR.
In 2004, factories in China turned out 10 billion pencils, enough to circle the earth more than 40 times. Half of the world’s pencils production came from China.
Even with zero gravity, pencils can write in the outer space. So, for all early American and Russian space missions, pencil is a must.
Paul Fisher developed the pressurized Fisher Space Pen in 1965. That’s after the Apollo 1 caught fire, due to pencil lead accident. NASA banned pencils in favor of his pen on manned spaceflights.