AD 105 paper was invented by a guy named Tsíai Lon, a Chinese guy.
Lon started taking pieces of rags, tree bark, and rolled fishnet.
Then he put it to soak in a little bit of water. Then using a very
heavy club, he pounded all of those things into pulp. He poured it
into a mold. When the pulp had dried, he had invented the first sheet
of paper. Up until 1800ís paper was made out of rags. Every
sheet was made by and the best paper maker could only make about 750 sheets
a day. Around the middle of the 19th century, an American guy named
William Tower invented the means of making paper from wood pulp.
And that is what we use today. In 1841 the envelope was invented.
By now everyone probably knows what Post-it notes are. They are those small self-stick notepapers. Teachers use them a lot. But guess what? Post-it notes werenít even a planned product! Weird, huh?
A guy that was named Spenser Silver was working in the 3M research laboratories. It was 1970 and he was trying to find a strong adhesive (a sticky substance).
He did get something, but it was very weak, instead of very strong. No one knew what to do with it, but Silver didnít get rid of it.
One Sunday, four years later, another 3M scientist, Arthur Fry, was singing in his church choir. He always sued markers to find his place in the hymnal. But they always fell out.
Then he remembered
Silverís adhesive. He put some on his markers and ...wow! It
worked! It didnít damage the paper when you pulled it off, and it
would stick on easily! So 3M started distributing Post-it notes nation-wide
in 1980, which was ten years after Silver had developed the weak adhesive.