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Marie curie and the discovery of radium

Marie Curie was born in Warsaw on November 7, 1867. Her father was a teacher of science 1 and mathematics in a school, and it was from him that little Marie Sklodowska (her Polish name) learned her first lesson in science.

In 1891 she went to Paris to continue her studies at the Sorfeonne.2' She determined to- work for two Master's 3 degrees—one in physics, the other in mathematics. Yet she had scarcely enough money to live on. She studied rright after night after her hard day's work at the Uni­versity. She chose her course and nothing could turn her from it.

Among the many scientists with whom Marie met and worked in Paris was Pierre Curie. When he met Marie ha was 35 years old and was famous throughout Europe for his discoveries in magnetism.

Pierre Curie and Marie, both of whom loved science more than anything, else, very soon became the closest friends. After a little more than a year Marie became Madame Curie.

At that time she had already her Master's degree in physics and mathematics and was busy in researches он steel. She wished to obtain a Doctor's degree. Pierre and Marie Curie were 'greatly interested in the work of the French scientist Becquerel.4 There is a rare metal ura­nium which, as Becquerel discovered, emits rays very much like X-rays.'? The Curies 6 wanted to discover the mystery of the rays of uranium. What caused them? How strong were they?

The research was carried out under great difficulties. Marie Curie had to use an old store-room at the University as her laboratory. There was no proper apparatus and very little space for research work. But she had to make the best of it.7

Besides uranium Marie Curie began, to examine every known chemical substance. She repeated her experiments time after time 8 and found that one mineral emitted much more powerful rays than uranium. So she could only de­cide that this mineral must contain some new element. It was a mystery. This seemed unthinkable. Scientists declared that every element was already known to them. However, all Marie's experiments proved that the mineral contained some new and unknown element. There was no other explanation for the powerful rays which it emitted. Scientists call the property to give out such rays "radio­activity", and Marie Curie decided to call the new ele­ment "radium".

Notes

  1. a teacher of science — преподаватель естественных наук

  2. the Sorbonne — старейшее учебное заведение в Париже, ос­нованное в 1257 г.

  3. Master's degree — степень магистра

  4. Becquerel А. А. (1852-1908) — Беккерель, Антуан Анри — выдающийся французский ученый; в 1896 г. открыл радио­активное излучение урана

  5. X-rays — рентгеновские лучи, открытые в 1895 г. извест­ным немецким физиком В. К. Рентгеном (1845-1923), который назвал их таким образом, отмечая их загадочную физиче­скую природу

  6. the Curies — супруги Кюри

  7. to make the best of it — мужественно переносить трудности

  8. time after time — снова и снова

SUBTERRANEAN HEAT SERVES MAN (to be read after Lesson 11)

Coal, oil and gas have been man's main sources of heat from ancient times. At the same time the earth con­tains inside it a practically inexhaustible supply of ther­mal energy, which without doubt can be used with great profit for economic needs.

Long, long ago magma, surrounding the core of our planet, rose towards the surface but could not burst through the crust and started cooling down gradually. This cooling process has been going on for hundreds of thousands or millions of years. By transferring heat to the rock around it, the magma heats the water in artesian basins and this is how subterranean1 deposits of hot water originated.

Our country has tremendous quantities of hot subter­ranean water. Such water can be found both in the sub­tropical areas and in the Arctic.

In one year the thermal springs in the Soviet Union bring to the surface of the earth an amount of heat equi­valent to that which could be obtained from the combus­tion of 100-150 million tons of fuels.

The hot subterranean water is being used for heating blocks of flats 2 and hothouses and for medical purposes. In some places this hot water goes to the top of the house without pumping.

The geological and geographical conditions for the presence of thermal water are different. But everywhere it is found that the economic effect of using it is quite great.

Plans are made for building an experimental power station in Kazakhstan powered by hot subterranean water. The temperature of the water reaches 170° at the depth of up to 3 kilometres.

The time is not far off when this cheap thermal energy will be widely used in the economy, making it possible to employ such valuable raw materials as coal, oil and gas, mainly in the chemical industry.

Notes

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