What is bel canto? Detailed answer

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What is bel canto? Detailed answer

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What is bel canto?

This is a style of vocal singing that originated in Italy, characterized by ease and beauty of sound.

Author: Mendeleev V.A.

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What were military armored tires?

It is known that in the wars of the 19th century, as well as the First and Second World Wars, many countries used armored trains. However, in addition to this, they tried to fight with the help of individual combat units - armored rubber. They were almost like tanks, but limited in movement only by rails.

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Mummies remember stress 14.07.2010

The stress hormone cortisol accumulates in the hair and can be detected even after centuries. Canadian anthropologists who studied ancient Peruvian mummies took advantage of this.

The inhabitants of Peru did not bury their dead, but walled them up in caves. The dry climate of the highlands turned the bodies into mummies, which are still well preserved. Canadians examined the hair of ten Peruvians who lived between 550 and 1532.

Hair on the head grows at a rate of about a centimeter per month. The average length of hair in the studied mummies is about 25 centimeters, so it is possible to calculate exactly when a person was stressed in the last two years of life. It turned out that the content of cortisol in the hair of mummies is more than twice as high as that characteristic of a modern person. Hormone levels fluctuated greatly over the two years.

The causes of stress among the ancient Peruvians are unclear: perhaps these are wars, periods of drought and famine, or near-death diseases.

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