1, the story of the copier

At first, Edison invented paraffin paper, which was only widely used as packaging material for food and candy. Later, he tried to carve the outline of the words on wax paper to form a wax lettering paper tray, put white paper under the paper tray, and then rolled it off the wax lettering paper with an ink roller. A wonderful thing happened, and clear handwriting appeared on the white paper. After many improvement experiments, Edison began to produce the copier he invented in 1976. All of a sudden, institutions, schools, institutions and organizations have adopted this kind of wax paper mimeograph. Because Edison's copier is very popular all over the world, Edison deeply realized that he should invent things that people generally and deeply need.

4.pasteur

Pasteur (Louis) was born in Dole, Jura, France on February 27th, 1822. His father is a veteran of Napoleon's army and a tanner. Pasteur 1948+0847 graduated from Paris Teachers College. After graduation, I engaged in chemical research and studied tartrate crystals. They have hidden asymmetry, and some crystals are mirror images of other crystals, just like the relationship between left hand and right hand. His achievements in crystal research played a decisive role in the development of stereochemistry.

Later, it was found that Pasteur was lucky to adopt the method of preparing crystals. In order to separate the two crystals, he had to use a special method, but Pasteur adopted this special method by accident. After him, few people could make large asymmetric crystals like him. As Pasteur said, "Opportunity favors those who are prepared."

5. The story of the steam engine

Watt is a child with extraordinary wisdom. He is diligent, eager to explore and most interested in invention and creation. One day, his father's friend came to visit, and he happened to see little Watt sitting by the fire in a daze, with paper and pen in his hand, and many paintings on the ground.

He said kindly, "Little Watt should go to school. Don't just play at home to kill precious time. " His father smiled and said, "Thank you, my friend. However, you'd better see what my son is playing with ... "It turns out that Little Watt is designing all kinds of toys and drawing many patterns. This year, Little Watt was just 6 years old. The guest said in surprise, "This child is really amazing.

On another occasion, the whole family went out, leaving only Watt as the doorman. He stared blankly at the teapot boiling water on the stove. The water was about to boil, the lid of the teapot was lifted by steam, and the steam was thrown up and down ... He thought, this steam is so powerful. If we can make a bigger stove and use a big boiler to boil water, the steam generated will definitely be dozens or hundreds of times larger than this.

Can't it replace a lot of manpower as the driving force of all kinds of machinery? This is the legendary story of "Watt invented the steam engine". Little Watt imagined it this way, but the steam engine was really trial-produced later.