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Source: Google.com.pk
The word paper comes from the ancient Egyptian writing material called papyrus, which was woven from papyrus plants. Papyrus was produced as early as 3000 BCE in Egypt, and in ancient Greece and Rome. Further north, parchment or vellum, made of processed sheepskin or calfskin, replaced papyrus, as the papyrus plant requires subtropical conditions to grow.
In China, documents were ordinarily written on bamboo, making them very heavy and awkward to transport. Silk was sometimes used, but was normally too expensive to consider. Indeed, most of the above materials were rare and costly.
Invention of PaperDrawing of Ts'ai Lun
The Chinese court official Ts’ai Lun described the modern method of papermaking in AD 105; he was the first person to describe how to make paper from cotton rags. Other sources trace the invention of this type of papermaking to China in 150 BCE.
It spread slowly outside of China; other East Asian cultures, even after seeing paper, could not figure out how to make it themselves. Instruction in the manufacturing process was required, and the Chinese were reluctant to share their secrets.
The technology was first transferred to Korea in 600 and then imported to Japan around 610 by a Buddhist priest, Dam Jing from Goguryeo, where fibres (called bast) from the mulberry tree were used.
The Spread of Papermaking Technology
After further commercial trading and the defeat of the Chinese in the Battle of Talas, the invention spread to the Middle East, where it was adopted in India and subsequently in Italy in about the 13th century. They used hemp and linen rags as a source of fiber. The oldest known paper document in the West is the Missal of Silos from the 11th century.
Some historians speculate that paper was the key element in global cultural advancement. According to this theory, Chinese culture was less developed than the West in ancient times because bamboo, while abundant, was a clumsier writing material than papyrus. Chinese culture advanced during the Han Dynasty and preceding centuries due to the invention of paper; and Europe advanced during the Renaissance due to the introduction of paper and the printing press.
Development of the Modern Papermaking Process
Paper remained a luxury item through the centuries, until the advent of steam-driven papermaking machines in the 19th century, which could make paper with fibres from wood pulp. Although older machines predated it, the Fourdrinier machine became the basis for most modern papermaking.
Fourdrinier Machine
In 1807, the Fourdrinier papermaking machine was patented in France. This machine worked by a continuous process: pulp was fed onto a belt of wire cloth that was continually moving, so that the sheet was left on the surface while the water drained through the wire.
The paper was smoothed on rotating heated cylinders, or calendars, and on to the reel. This was cut up into the appropriate length of sheets, which were then traditionally counted into reams. The Fourdrinier brothers were able to increase their production of paper ten-fold, from 60 to 100 lbs. per day by hand, to 1,000 lbs. per day using their new machine. Fifty years after the mechanization of the process, the price of paper had dropped by almost one half.
Together with the invention of the practical fountain pen and the mass-produced pencil of the same period, and in conjunction with the advent of the steam-driven rotary printing press, wood-based paper caused a major transformation of the 19th-century economy and society in industrialized countries.
Before this era, a book or a newspaper was a rare luxury object, and illiteracy was the norm. With the gradual introduction of cheap paper, schoolbooks, fiction, nonfiction, and newspapers became slowly available to nearly all members of society. Cheap wood-based paper also meant that keeping personal diaries or writing letters ceased to be reserved to a privileged few. The office worker or the white-collar worker was slowly born of this transformation, which can be considered as a part of the industrial revolution.
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
Pc Wallpapers Islamic Wallpaper Hd Quotes desktop for Mobile free download for facebook hd 1080p 3d Desktop Background
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