Science short story

/kloc-a venetian businessman in the 0/5th century often went out to do business, but he was worried that his wife would go out to have an affair. One rainy day, he was walking in the street, with a lot of mud on his heels, and he walked very hard. Businessmen are inspired by this, because Venice is a water city and boats are the main means of transportation. The businessman thinks that his wife will not be able to walk on the springboard in high heels, so she can be trapped at home.

Unexpectedly, his wife felt very novel when she put on these shoes. Accompanied by the servant, she got on and off the boat and played around. High-heeled shoes made her more graceful, and fashionable ladies rushed to follow suit, so high-heeled shoes quickly became popular.

raincoat

1747, French engineer Franois Fraineau made the world's earliest raincoat.

He used latex obtained from rubber wood to dip cloth shoes and jackets in this latex solution, which can play a waterproof role.

McIntosh, who works in a rubber factory in Scotland, can't afford rain gear because he lives in poverty. Every rainy day, he can only go to work in the rain. One day, he accidentally spilled rubber juice on his clothes and couldn't wipe it off, so he had to wear this dirty clothes to go home. It was raining outside, but when McIntosh came home, he was surprised to find that his clothes were not wet at all. He just smeared rubber juice on his clothes. This is the first rubber raincoat in the world.

barber

1828 sheffield made a single-sided protection blade, which is the predecessor of the safety blade.

1895, an American salesman, Gillette, stumbled upon the inventor painter, hoping to make a lot of money and invent something that everyone needed once.

One day, Gillette shaved and found that the razor blade just met this idea. He designed a safe razor handle, but he couldn't find a manufacturer who could make thin blades. It was not until 190 1 that he met Carson, a mechanic, that he solved the technical problem, combined the hoe rest with the double-edged replaceable blade and applied for a patent.

As early as 1900, the electric shaver was patented in the United States, but the first electric shaver suitable for commercial manufacture was designed by retired American army colonel Hick and patented in 1928.

mirror

Our ancestors made beautiful "transparent mirrors" more than 2000 years ago. /kloc-At the beginning of the 4th century, Venetians painted tin foil and mercury on the back of glass to make mirrors, which looked very clear. /kloc-The convex lens made in Nuremberg in the 0/5th century was made by coating a layer of mercury in the glass.

Modern mirrors are made by the method invented by German chemist Libiger in 1835. Silver nitrate is mixed with reducing agent to precipitate silver from silver nitrate and attach to glass.

Traction chain

Zipper was first invented by Chicago mechanic Judson in 189 1 year.

In order to relieve the trouble of tying shoelaces every day, Judson invented a zipper which can replace shoelaces. This zipper consists of a row of hooks and a row of buttonholes. Pull an iron slider from bottom to top, and the hook and buttonhole can be fastened one by one. Judson sent the sample to Columbia Expo on 1893, which was well received and patented.

Nowadays, there are more and more kinds of zippers, and their applications are not limited to daily necessities, but also into scientific research, medical care, military and other fields, and they are praised by some people as one of the great civilizations in the field of science and technology in the 20th century.

fridge

The first artificially compressed poplar was invented by Harrison at 185 1. Harrison is the owner of Quilen advertising company. When he cleaned the type with ether, he found that ether had a strong cooling effect on metals.

Ether is a liquid with low boiling point, which is easy to evaporate and absorb heat. Harrison developed a refrigerator using ether and pressure pump through research, and applied it to a brewery in Victoria, Australia, for refrigeration and cooling during brewing.

The first refrigerator with motor-driven compressor was invented by Swedish engineers Brighton and Mendes in 1923. Later, an American company bought their patent and produced the first batch of household refrigerators at 1925.