Some of the most unexpected inventions in history

It is true that the broken leg increases the height, and the invention of the legendary "height enhancement" originated from an accident.

Before the 50s of the 20th century, a large number of disabled soldiers who had been evacuated from the front line due to the war were assigned to hospitals** throughout the Soviet Union, including a small Siberian village where Irizarov lived.

At the time, there was a deep-seated belief in the medical community that broken bones could only grow together if they were in close contact. Therefore, many patients with fractures will receive the ** method of external fixator compression, as shown in the figure below (handwritten by Mr. Hayashi, the soul painter), and the fractured bones are squeezed together through pressure to promote the healing of the fracture.

Fleming with penicillin.

Fleming was born in Jarre, Scotland, the youngest of eight children to a thrifty and honest father. Due to his family's disadvantage, he was unable to complete his higher education and had to come out at the age of sixteen to earn a living. At the age of twenty, he inherited an inheritance from his aunt so that he could continue his studies. After graduating from medical school at the age of 25, he has been engaged in medical research.

In 1928, Fleming was lecturing bacteriology at the University of London and accidentally discovered that mold had a bactericidal effect, which looked like a brush under the microscope, so Fleming called it "penicillin" (the original meaning of penicillin is fine-haired). From this time on, Fleming began to systematically study penicillin, and it was not until 1938 that penicillin was officially used on patients. During World War II, penicillin saved countless lives.

The story of Newton and Apple.

For a long time, Newton believed that there must be a mysterious force that pulls the planets in the solar system around the sun. But what kind of force is this?

Until one day, when Newton was thinking under an apple tree in the garden, and an apple fell at his feet, Newton finally had an epiphany, and his problem was gradually solved.

Legend has it that in the autumn of 1665, Newton sat under an apple tree in his yard and pondered the cause of the planets' orbits. At this moment, an apple happened to fall, and it landed at Newton's feet. It was a moment of discovery, and this time the apple's whereabouts were different from countless previous apple drops, and the country caught Newton's attention for it.

Newton found the reason for the fall of the apple from the natural phenomenon of the apple falling to the ground - the effect of gravity, this invisible force from the earth pulls the apple down, just as the earth pulls the moon and makes the moon move around the earth.

Penicillin. Penicillin, also known as penicillin, was the greatest discovery of the 20th century, and its birth was caused by a small accident.

In 1928, pharmacologist Alexander Fleming stumbled upon a strange phenomenon in a petri dish he was about to discard, which, unlike other dishes, contained mold that inhibited the growth of bacteria around it. So Fleming began experimenting with fungi. Later, pathologist Howard Flory took over his job and improved the purity of this new antibiotic, and penicillin was born.

Its appearance quickly turned the tide of the war for the Allies in World War II, saving tens of thousands of lives.

Mycin belongs to lactams, lactams include penicillins, cephalosporins, carbapenems, monocyclics, cephamycins, etc. Penicillin is a very commonly used antimicrobial drug for spinal posture. However, a skin test must be done before each use to prevent allergies.

1.Gunpowder. During the Northern Song Dynasty, gunpowder was widely used in warfare in China. In 1000 AD, a man named Tang Fu invented tribulus terrestris, adding arsenic, asphalt, and tribulus terrestris to black powder recipes to make primitive bombs.

2.Movable type printing. Around 1040 AD, Bi Yao clay produced the earliest known movable type.

Bi Sheng is an excellent lettering worker, in the long-term lettering practice summed up the movable type printing, its principle is exactly the same as modern printing, divided into three steps: the first is to make movable type, the bad followed by typesetting, and finally printing.

3.Compass. The manufacturing technology of the compass was first proposed in Shen Kuo's (1031-1095 AD) "Mengxi Bi Tan".

Shen Kuo pointed out that the small iron needles that had been ground on the magnet had relatively stable magnetism, so it was decided to use this artificial magnetic needle instead of the natural magnet to make pointing tools.

4.Locks. The locks have been greatly developed in the Northern Song Dynasty in China. Around 1000 A.D., a large lock was created on the third weir of the West River of the Beijing-Hangzhou Grand Canal, known as the West River Lock, with two gates, and the structural principle is the same as that of the modern lock.