1 zipper
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 enter the fields of scientific research, medical care, military and so on, and are praised by some as one of the top ten inventions in the 20th century.
2. refrigerator
The first artificial refrigeration compressor was invented by Harrison in 185 1 year. Harrison, the owner of Quilen Advertising, an Australian newspaper, found that ether had a strong cooling effect when used to clean type.
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 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.
3. Inspiration from nature
Inspired by bionics, British scientists are developing a new submarine, which can swim in an S shape by swinging its tail fin. The main innovation is the use of a device called "trunk actuator". "Elephant trunk" consists of a group of thin and soft hoses, which imitate muscle activity and promote fin movement. This new submarine can be used as an underwater mine-clearing submarine to deal with mines that will detonate at the slightest sound or interference.
4. Radar
A radio positioning and ranging device: Scientists have found that bats rely not on eyes, but on an echo positioning system consisting of mouth, throat and ears. Because bats emit ultrasonic waves when flying, they can also detect ultrasonic waves reflected by obstacles. Based on this, scientists have designed a modern radar-a radio positioning and ranging device.
By studying the tiny swimming resistance of dolphins, scientists invented artificial dolphin skin which can improve the speed of torpedoes. And a wheeled vehicle (jumping machine) that imitates kangaroo's movement in the desert.
Inspired by penguins, scientists from the Institute of Zoology of the former Soviet Academy of Sciences designed a new type of car "Penguin King" brand polar off-road vehicle. The wide bottom of this car is directly attached to the snow surface and supported by a wheel spoon, and the driving speed can reach 50 km/h.
5. Underwater dynamics
The invention of mankind-inspired by animals-ships and submarines came from people's imitation of fish and dolphins. Scientists have made the first batch of gas masks in the world according to the unique drug detection ability of wild boar nose. The rocket takes off by using the recoil principle of jellyfish and squid. Researchers have developed many military camouflage equipment for the army by studying the chameleon's color-changing ability.
Scientists studied frog eyes and invented electronic frog eyes. The US Air Force has developed a miniature thermal sensor through the "hot eye" function of poisonous snakes. Humans also used the principle of leapfrog to design a toad rammer. Humans imitate the highly sensitive sense of smell of police dogs and create "electronic police dogs" for investigation.