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Despite predictions that writing paper may soon "go extinct," people are still using an awful lot of the stuff, often for notes that don't need to be kept very long.That's why a number of groups have developed so-called rewritable paper, with an interesting example of the technology recently being created by scientists in China.
They dyed paper for official records with a yellow substance, the imperial color, which had the added benefit of repelling insects that might have destroyed the paper otherwise.
One of the most common formats for early paper was the scroll.
Paper is in shopping bags, money, store receipts, cereal boxes, and toilet paper. So, where did this marvelously versatile material come from?
According to ancient Chinese historical sources, a court eunuch named Ts'ai Lun (or Cai Lun) presented the newly-invented paper to the Emperor Hedi of the Eastern Han Dynasty in 105 CE.
From its point of origin in China, the idea and technology of paper-making spread throughout Asia.
In the 500s CE, artisans on the Korean Peninsula began to make paper using many of the same materials as Chinese paper-makers.
The resulting slurry was then poured over a horizontal mold; loosely-woven cloth stretched over a framework of bamboo allowed the water to drip out the bottom or evaporate, leaving behind a flat sheet of dry hemp-fiber paper.
Over time, paper-makers began to use other materials in their product, including bamboo, mulberry and different types of tree bark.
The historian Fan Hua (398-445 CE) recorded this version of events, but archaeological finds from western China and Tibet suggest that paper was invented centuries earlier.
Samples of even more ancient paper, some of it dating to c.