What explains the smell emanating from the coins? Detailed answer

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What explains the smell emanating from the coins? Detailed answer

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What explains the smell emanating from the coins?

The characteristic smell of coins is not the smell of metal. It comes from compounds formed by contact with the metal of organic substances, such as human sweat. Moreover, in order for a person to feel this "metallic" smell, a very small amount of reagents is enough.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What is a cloud?

This chapter is about how clouds form. Warm air filled with moisture rises into the sky. When it reaches a certain height, it cools down. At a lower temperature, it can no longer contain all of the moisture in the form of water vapor. Therefore, excess moisture is converted into small droplets of water, ice crystals, which make up a cloud or a cloud. There are no two exactly alike clouds, especially since they are constantly changing their shape.

Clouds have different shapes because they form at different heights and at different temperatures. After the water vapor turns into a liquid (this process is called condensation), it comes into contact with dust and other air particles. The smallest drop of water forms around each such tiny particle, which is brought by the wind from deserts, dry highlands and volcanoes. These are small crystals of salt from the oceans, tiny pieces of ash from burnt coal and much more.

It takes about 100 tiny droplets to form one raindrop. And to form a cloud, you need millions and millions of these droplets. Such a cloud measuring a kilometer wide, a kilometer long and a kilometer high could contain about 000 tons of water in the form of droplets and almost 000 tons of water in the form of vapor.

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E-cigarettes increase the risk of stroke 13.11.2021

American cardiologists have found that vapers suffer from a stroke about 15% more often than other people of similar age who smoke regular cigarettes.

"The liquid for vaping contains not only nicotine, but also other substances that negatively affect the functioning of blood vessels. Because of them, brain vessels can be damaged: blood clots may occur in them more often, which increases the risk of ischemic or hemorrhagic stroke," commented Karen Fury, professor at Brown University (USA) and one of the authors of the study.

Recent studies show that tobacco use is more dangerous than vaping, but the latter also threatens the human body. In particular, in a pair of electronic cigarettes, scientists have found toxins, carcinogens and other substances that not only increase the likelihood of lung cancer, but also make the walls of arteries and veins more fragile.

In a new study, physicians led by Urvish Patel from the Mount Sinai Hospital School of Medicine (USA) found another negative effect associated with the use of electronic cigarettes. Scientists analyzed surveys conducted by the US social and medical services in 2015-2018 among 266 thousand Americans, some of whom had recently experienced a stroke. This information became useful for researchers due to the fact that respondents indicated which cigarettes they use - regular or electronic.

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