Dissolution of a pure gold ingot in acid

▫️ Mortality in Russia in 2021

According to the latest United Nations data, Russia in 2021 ranked sixth in the world both in the total number of deaths (2.459 million people) and the mortality rate (17 deaths per 1,000 inhabitants). By the way, it is interesting that the leaders are not African countries, and the European countries (probably due to the high mortality rate of elderly against the background of covid): the first 5 places were taken by Bulgaria, Monaco, Latvia, Serbia and Lithuania. And we are 6, and Ukraine is 7

What is really frightening is mortality of men of working age. Of the men who survive to 15 years do not reach 50 182 out of a thousand, and up to 60 - 340 out of a thousand, that's 28 and 22 places respectively (out of more than two hundred). The places seem to be not as bad as in the previous case, but here we are ahead of even most African countries. We shared our place with Burkina Faso in the male mortality rate from 15 to 50, and from 15 to 60 with Cameroon and Guyana. We were be

The first flight of an airplane, the Wright Flyer on December 17, 1903

A protective blood cell (leukocyte) chases and engulfs the bacterium.

A 22-year-old tourist woke up in pain and noticed that her ear and face were swollen.

She visited the local hospital, where she was prescribed antihistamines, but they did little to clear up the swelling.

By the time she returned to the Netherlands, part of her ear had turned black. Doctors discovered that she had been bitten by the Mediterranean recluse spider (lat. Loxosceles reclusa), whose venom, in high concentration, caused tissue necrosis.

Plastic surgeons removed the dead skin and used cartilage from the woman's ribs to recreate her ear.

The first webcam was created in order to monitor the coffee maker.☕

The structure of the money supply in Russia

Of the total number of banknotes in circulation, 35% are 5000 bills. At the same time, according to data of the Bank of Russia, bills of 5000 rubles are expected to occupy 83% of all cash in circulation by the sum of denominations.

The banknote of 1,000 rubles is in second place by the number of banknotes, occupying a share of 21%. Another 17% is accounted for by the 100-ruble banknote.

Relatively new for Russia banknotes of 200 rubles and 2000 rubles take a rather modest share - only 2% and 4% of the total number of banknotes in circulation.

#Money #Russia

The Xoloitzcuintli is an ancient Aztec dog breed native to Mexico, once considered as guides for the dead on their journey to the underworld.

The hugging teeth of a glycera americana (American bloodworm)

▫️ Countries to which the U.S. has directly intervened militarily in the last 30 years

After the collapse of the Soviet Union, the U.S. Army has been present in nearly every part of the world, most often in Africa and the Middle East. But not only: they have fought in Europe (Yugoslavia), and in Latin America, and even in Southeast Asia. Why and who really needed these military operations (at least most of them) is a big, big question...

Chicago

This is an 1896 video of residents of the city of Lyon playing snowballs. The film, which is 124 years old, was colored and adjusted to the playback speed as if it was filmed in our time