In what country did the bells of the St. Danilov Monastery live between 1931 and 2007? Detailed answer

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In what country did the bells of the St. Danilov Monastery live between 1931 and 2007? Detailed answer

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In what country did the bells of the St. Danilov Monastery live between 1931 and 2007?

When the St. Danilov Monastery was being destroyed in the 1930s, the Soviet government planned to send the bells to be melted down. Upon learning of this, the American industrialist bought them at the price of bronze, took them overseas and presented them to Harvard University.

In 2007, Harvard agreed to return the bells to the revived monastery on the condition that Russian craftsmen cast exact copies to replace the original bells.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What is radium?

Radium is a radioactive element. Let's look at what "radioactive" is.

All chemical elements are made up of atoms. Most atoms are stable, which means they don't change. But some of the heaviest atoms decay and turn into others. This decay is called "radioactivity".

Each radioactive element, when decaying, emits certain rays with a certain frequency. This frequency cannot be accelerated or slowed down in any way. Some elements decay quickly, others slowly, but in any case this phenomenon is not subject to man.

Radium decays to eventually form lead. For example, half a gram of radium will turn into atoms of another substance with a lower atomic weight in 1590 years. After another 1590 years, the remaining radium will be converted, and so on until all the radium becomes lead.

Radium was discovered by the Curies. They were refining tons of uranite, an ore containing uranium. It was known that uranium emitted invisible rays, but they believed that there must be another more powerful element. First they managed to get polonium, another radioactive element, and finally they isolated radium.

Radium emits three types of radiation - alpha, beta and gamma rays. Alpha radiation is helium particles that have a high speed. Beta radiation is fast electrons. Gamma rays are similar to X-rays, but have more penetrating power. When one of these radiations is emitted, the atom that is its source is transformed into another element. This change is called "atomic transformation".

Why is radioactivity dangerous to humans? Imagine these flying particles of destroyed atoms. When these particles hit other atoms, they cause them to collapse, changing their chemical characteristics. And when these particles enter the living cells of the body, they lead to their changes! They can burn and destroy the skin, destroy red blood cells, and also cause changes in other cells.

Therefore, radioactivity can be both beneficial and dangerous to humans.

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