Marie Curie (7 November 1867–4 July 1934) was a Polish-born French scientist whose research established methods for studying radioactivity and identifying radioactive substances. Working with Pierre Curie, she discovered polonium and radium in 1898. She shared the 1903 Nobel Prize in Physics with Pierre Curie and Henri Becquerel and received the 1911 Nobel Prize in Chemistry independently. She was the first woman to receive a Nobel Prize and the first person to receive two. Her career combined experimental research, university teaching, laboratory leadership, and wartime radiological work. (nobelprize.org)
Early life and education
Born Maria Skłodowska in Warsaw, then under Russian imperial rule, Curie grew up in a family of teachers. Her father provided some of her early scientific training. Although she excelled academically, women were excluded from university study in her homeland. She moved to Paris in 1891 to pursue higher education at the Sorbonne, part of the University of Paris. She obtained degrees in physics in 1893 and mathematics in 1894. (nobelprize.org)
She met Pierre Curie in 1894 and married him the following year. Their partnership eventually brought together his expertise in precision instrumentation and her investigations of radioactive materials. They had two daughters: Irène, who became a scientist, and Ève, who later wrote a biography of her mother. Marie completed her doctorate in 1903, with research on radioactive substances. (nobelprize.org)
Radioactivity and the discovery of new elements
Curie’s research followed Henri Becquerel’s discovery in 1896 that uranium compounds spontaneously emitted penetrating radiation. She extended the investigation to other substances and introduced the term “radioactivity” for this property. Rather than relying only on photographic effects, she used quantitative electrical measurements to compare the activity of different samples. These measurements made radiation a tool for investigating the composition of matter. (nobelprize.org)
A crucial observation concerned pitchblende, a uranium-bearing mineral whose activity exceeded what its uranium content could explain. Curie inferred that it contained an unknown, more strongly radioactive constituent. Marie and Pierre then combined measurements of activity with chemical separation, following the strongest radiation through successive fractions of the material. This linked experimental physics with analytical chemistry: radiation could reveal substances present in quantities too small for ordinary chemical identification. (nobelprize.org)
In July 1898 they announced polonium, named after Marie’s native Poland. In December they announced radium, in work involving Gustave Bémont. Announcing these discoveries did not mean that either substance had immediately been obtained as a pure metal. Establishing radium as a distinct chemical element required prolonged processing, purification of its salts, and determination of its atomic weight. Curie’s work helped establish radioactivity as a property associated with the atom, rather than merely with a particular chemical compound. (nobelprize.org)
Nobel recognition and university career
The 1903 physics prize recognized research on the radiation phenomena discovered by Becquerel. Becquerel received half the prize, while Marie and Pierre Curie shared the other half. The award made their work internationally prominent, although their investigations had initially proceeded with limited laboratory facilities. (nobelprize.org)
Pierre died in a street accident in 1906. Marie subsequently took over his teaching responsibilities and laboratory leadership at the Sorbonne, becoming the first woman to occupy that professorial position. She continued research while maintaining a university teaching career. (nobelprize.org)
The 1911 chemistry prize recognized the discovery of radium and polonium, the isolation of radium, and investigation of its nature and compounds. In her Nobel lecture, Curie distinguished identifying a radioactive substance from establishing its chemical properties. Her work supplied both new elements and methods for investigating matter, contributing to the emerging field of nuclear physics. (nobelprize.org)
Research institutions and wartime radiology
Curie helped develop the Radium Institute in Paris, created through cooperation between the University of Paris and the Pasteur Institute. Its buildings were completed in 1914. She directed its physics and chemistry laboratory, while physician Claudius Regaud directed research into the biological and medical effects of radiation. This organization brought laboratory science into sustained contact with medicine. (curie.fr)
During World War I, Curie organized mobile and hospital-based radiology services. Vehicles equipped with X-ray apparatus brought imaging closer to wounded soldiers, allowing doctors to locate bullets and fragments and examine fractures before surgery. She obtained equipment, helped arrange installations, and trained operators. Irène assisted her, including in work near the front. Curie also learned driving and vehicle maintenance to support these operations. (history.aip.org)
After the war, research and clinical applications developed alongside one another. The Curie Foundation, established in 1921, supported this work, and a dispensary opened in 1922 offering treatments that included radiotherapy for cancer. These institutions formed part of the historical foundation of Institut Curie. (curie.fr)
Later life and commemoration
In 1921, American fundraising provided Curie with one gram of radium for research, presented by President Warren G. Harding. Her laboratory also trained a new generation of researchers. Irène and her husband, Frédéric Joliot-Curie, subsequently received the 1935 chemistry prize for their work on artificial radioactivity. (nobelprize.org)
Curie died at the Sancellemoz sanatorium in France on 4 July 1934, aged 66. Her death certificate described a rapidly progressing aplastic form of anemia. She had experienced substantial radiation exposure, but surviving medical documentation does not establish the relative contributions of her laboratory and wartime exposures. (musee.curie.fr)
In 1995, her remains and those of Pierre were transferred to the Panthéon in Paris. She became the first woman admitted there in recognition of her own achievements. Her former laboratory and office were preserved within the Musée Curie, whose collections document the research institutions and instruments associated with the Curie family. (musee.curie.fr)