Posted on Jul 8, 2021 84
Paper was invented in China. For a long time in that country they used to write on bamboo planks, which was very inconvenient: too much space was needed to store such “archives”. In 105 A.D. Minister of Agriculture Cai Lun suggested using a thinner material made of shredded and soaked pieces of cloth and tree bark.
For a long time the recipe for making paper the Chinese kept a closely guarded secret. Only in VIII century manufacturing technology learned the Arabs. During the war with China, some workers-paper makers were captured by the Arabs, who revealed the secret. Soon the paper was made in Baghdad.
According to statistics, the most paper spent by residents of the United States - almost 1 kg, a day per person, ie, over 300 kg, per year. Europeans are more economical - about 75 kg a year. The average citizen of Africa suffices a kilogram for the entire year.
By the way, in the U.S. only the tax office uses up to two billion sheets annually. In California, in order to take care of nature, even a law was passed according to which clerks may use only paper made of waste paper.
For a long time it was thought that an ordinary sheet of office paper could not be folded over seven times. This hypothesis was disproved in 2001 by an ordinary schoolgirl from California, Britney Gallivan, who could fold in half a sheet of paper twelve times.
Paper is considered being one of the major culprits of global warming. The gases emitted during paper production are detrimental to the environment and increase the greenhouse effect. It takes as much electricity to produce one ton of paper as it does to melt a ton of steel.
Paper spam has become a disaster for people in the United States. Every year, every American, including an infant, receives up to 10 kilograms of useless waste paper in the mail at home as advertisements, magazines, coupons, etc.
Paper waste makes up one-fourth of the world’s trash.One of the worst wasters of paper is government agencies.
Most paper is made from softwoods, which give paper its mechanical strength.
Until the eighteenth century, to read a text written on paper was dangerous to eyesight, since the sheets were gray, so the text blended in with the paper. Bleaching it began only after chlorine was industrial application.
The paper is quite edible. 85% of the paper is cellulose - a complex carbohydrate, almost the same as sugar. Only the absence in the gastric juice of enzymes that break down cellulose does not allow a person to fully eat wood. Bark beetles and other wood bugs have done just fine and live practically in a lump of sugar. The paper also contains some glucose, an excellent digestible substance.
Toilet paper also was made in China, back in the 14th century. There is a record that dates back to 1393, which reported that for the needs of the emperor and his court made 720,000 sheets of toilet paper. At that time, paper was an expensive material, so its use for such purposes was a luxury.