Mrs Curie's research note has been emitting radiation even after 100 years have passed

In order to find out about historical figures, it is necessary to correspond to works and documents left by that person, but investigation may be extremely difficult, such as few existing materials or difficulty obtaining the original. Among them, known for the discovery of polonium and radiumMari Curie(Currie's Mrs.) left research materials are still in a state that can not be obtained easily because it continues to emit radiation even now even after more than 100 years passed.

Marie Curie's century-old radioactive notebook still needs lead box
http://factually.gizmodo.com/marie-curies-100-year-old-notebook-is-still-too-radioac-1615847891

Marie Curie's Research Papers Are Still Radioactive 100+ Years Later | Open Culture
http://www.openculture.com/2015/07/marie-curies-research-papers-are-still-radioactive-100-years-later.html

Mary Curie and Pierre Curie studied about "what kind of substance has radioactivity" and Mrs. Curie received the Nobel Prize twice in 1903 and 1911. However, they do not understand the dangers of radioactive substances and thorium, uranium, etc. are placed naked in the laboratory at home. Since these radioactive materials vaguely emit light in a dark place, Mrs. Curie's note includes "One of the pleasures of research was to enter the laboratory at midnight.Test tubes filled with samples are like lights of fairies It was beautifully shining on it. "

ByR K

Also, Mrs. Curie had always carried polonium and radium in the vial for research, but he seems to have not worn any clothes that would protect himself from radiation besides the standard clothing for research. Mrs Curie was caused by the radioactive substance used for researchAplastic anemiaHe died of 66 years old in 1934.

After the death of Mrs. Curie, her home was used by the Paris Institute of Atomic Physics and the Curie Foundation until 1978. However, after the risk of radioactive material remaining in the house was clarified, the whole house was put under the supervision of the government, and no one was able to enter the house for a while. In 1991 the home and laboratory decontamination work was finally done and research materials and notes were brought out of the house.

The "Mary-Curie Museum" is located in Warsaw, Poland's place of wife, Mrs. Curie, where you can see the exhibits that reproduce Mrs. Curie's laboratory.

ByJorge Láscar

Currently, the handwritten notes of Mrs. Curie are kept at the French National Library, but since the half-life of radioactive material carried by Mrs. Curie was 1601, research materials such as notes, clothes, furniture, cuisine Until the book, Mrs. Curie's possessions still have radiation, and it is a dangerous situation unless it is kept in a lead box for centuries to keep it. At the French National Library you can see the notes of Mrs. Curie shown in the picture below, but after signing an exemption letter of consent, it is necessary to wear protective clothing carefully.