What is Three Creets and what does Three Creet mean?

A radioactive element that Marie Curie tinkered with, there is an article called three grams of radium.

It's a general term for something like three grams.

Answer: Beauty looks close but no.

The first radium in "Marie Curie's Three Clays" was refined by Marie Curie herself, and the method was published free of charge, reflecting the selfless dedication and selfless spirit of Marie Curie.

"Three Grams of Radium" tells the story of Marie Curie's possession of three grams of radium in her life, showing the world the great personality of Marie Curie as a scientist: even for the sake of science, you cannot take the results of scientific research for yourself. This is another contribution that Marie Curie made to mankind at the same time as she contributed radium.

Marie Curie (1867-1934) was born Marie Curie. French physicist and chemist. Nationality:

Poland. Together with her husband, Pierre Curie, he studied the phenomenon of radioactivity. In 1898, the radioactive element radium was discovered; Later, another radioactive element, polonium, was discovered, for which she won the Nobel Prize twice and was hailed as the most outstanding female scientist of the twentieth century.

She has two outstanding daughters. The eldest daughter, Elena, was a brilliant scientist who was awarded the Nobel Prize in Chemistry in 1937. The youngest daughter, Eve, is a well-known educator and biographer, and the author of the book "The Biography of Marie Curie".

A gram of radium that she refined herself.

For the experiment, a man raised money and donated a gram of radium to her.

First gram: Marie Curie refined it herself.

The second gram: Marie Curie disclosed the method of radium extraction, but she could not afford to buy radium for research, and at the appeal of Madame Mironnay, on May 20, 1921, the United States** donated one gram of radium to Marie Curie from the public.

3rd gram: When Marie Curie wanted to set up a radium research institute in her native Warsaw, Poland, to carry out cancer work, the American public donated one gram of radium to her again.

"People who have the courage to practice", they can get great gains from their work, not only forget the welfare of the public, but also protect their own interests. The other is the "dreamer", like Marie Curie, who has "selflessness obsessed with his career".

It refers to a person who has selflessly contributed to humanity.

People who have dreams and dare to practice.

Marie Curie, also known as Marie Curie, was a French scientist of Polish origin. She and her husband, Pierre Curie, were early researchers of radioactivity, discovering the radioactive elements polonium (Po) and radium (Ra), and thus working with the French physicist Henri. Henry Becquerel shared the 1903 Nobel Prize in Physics.

Marie Curie continued her research on the use of radium in chemistry and medicine, and was awarded the Nobel Prize in Chemistry in 1911 for the isolation of the pure metal, radium.

Radium, atomic number 88, atomic weight 2260254, is a natural radioactive element, the name of the element ** in Latin, the original meaning is "ray". In 1898, the Curies discovered radium from asphalt uranium slag, and in 1902, 90 milligrams of radium chloride were isolated and the atomic weight of radium was preliminarily determined. Radium is widely distributed in nature, but the content is very small, the content in the earth's crust is one part per billion, and the total amount is about 18 million tons.

All isotopes of radium with a mass of 206 230 have been discovered, of which only radium is a natural radioactive isotope, and the rest are synthesized by artificial nuclear reactions. Radium-226 has the longest half-life and the largest natural abundance, and is the most important isotope of radium.

Radium is a silvery-white lustrous metal with a melting point of 700 °C, a boiling point of 1140 °C, a density of about 5 grams, and a body-centered cubic lattice. Radium is chemically reactive and similar to barium. Radium metal reacts rapidly when exposed to air to form oxides and nitrides; It can react with water to form radium hydroxide; The newly prepared radium salt is white in color and changes color due to irradiation after placement.

Radium is the most important radioactive material before the rise of the modern nuclear industry, and is widely used in medical, industrial and scientific research fields. Mixing radium salt and zinc sulfide phosphor can be made into permanent luminescent powder. By 1975, about 4 kilograms of radium had been produced worldwide, of which 85% was used for medical purposes and 10% for the manufacture of luminescent powders. Radium is a highly toxic substance.

After the discovery of polonium, the Curies continued to analyze the barium-containing fraction, which is 900 times more radioactive than pure uranium. After concentration, the division crystallized, and finally in December of the same year, a small amount of not very pure white powder was obtained. This white powder shimmers in the darkness, which led the Curies to name it radium, which means "radiation" in Latin.

The discovery of polonium and radium brought great uneasiness to the scientific community. Some physicists remain cautious and are willing to express their opinions only when further results are available. Some chemists make it clear that the presence of radium cannot be represented without measuring the atomic weight.

Only when we show us radium do we believe that it exists. To extract pure radium or polonium from uranium ore and measure their atomic weights was obviously much more difficult for the Curies who did not have complete and sufficient experimental equipment at that time, as well as funds to purchase ore and sufficient experimental costs, than to discover polonium and radium from uranium. In order to overcome this difficulty, they traveled everywhere to enlist the help and support of the relevant departments.

As a result of their efforts, Austria donated 1 tonne of uranium ore residue. They borrowed a leaky shack from the School of Physics and Chemistry, which was not even suitable for storing the dead bodies, and began to work even harder. The shack was as hot as an oven in the summer and frozen in the winter, and the unventilated environment forced them to keep many of the refining operations in the open air in the courtyard.

None of the workers wanted to work in such conditions, but the Curies struggled in this environment for four years.

The first Clay was refined by Marie Curie after repeated research and donated to science for research in the laboratory On May 20, 1921, Harding donated one gram from the public to Marie Curie, and Marie Curie donated the laboratory A few years later, when Marie Curie founded a Ray Research Institute in her native Poland, the American public donated a second gram to him again.

The first gram of radium was refined by Marie Curie, the second gram of radium was donated by the American public, and the third gram of radium was also donated by the American public.

The first gram of radium was refined by Marie Curie herself; The second gram of radium was donated by the American people at the appeal of Madame McNellon and moved by Marie Curie's selfless spirit; The third gram of radium was also donated to Marie Curie when she wanted to open the Radium Research Institute.

It was 3 grams of radium extracted by Marie Curie from hundreds of tons of scrap iron, and those 3 grams had a light blue extract...