Bone dating techniques

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During the Tang Dynasty (618-907) the technique spread across Asia, through Philippines, Vietnam, Korea and Japan..But although it was a great advance, this block printing technology had a serious drawback.This became known as block printing, and was very similar in concept to the Chinese seal.This technology produced the first ever book with a verifiable printing date in 868. This was nearly 600 years ahead of the first printed book in Europe.

Modern paper is still made from rags and wood pulp.Around 2,200 BC the Egyptians in the lower Nile region discovered that a type of reed, papyrus, could be formed into a writing surface by overlapping thin strips which had been soaked for a long time in water, and then pounding and pressing it into a sheet.But it wasn't really paper as we know it, and it was difficult to write on, and expensive.In fact the earliest paper is very similar to modern paper in concept and technology.The inventor of paper is traditionally assumed to be Chai Lun (or Ts'ai Lun), who was the head of a royal workshop in 2nd century China.

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