Dating in society
These are paper, gunpowder, the compass and printing.
Interestingly the word 'paper' is derived from 'papyrus'.
Keith Ray surveys the four great Chinese inventions that have changed the World.
It is an article reprinted from SACU's China Eye magazine (2004).
to the 19th century, reflecting the great achievements and wide diversity of Asian arts and cultures.
Defined and set by us, they improve the lives of millions every day.
Pfaff machines are popular in the USA and until recently we had no way of dating them from serial numbers.
We do Dance Parties, Speed Dating, Speakers, Wine Tasting, Advanced Degrees Mixers, and Cocktail Parties.
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.