Marie Curie’s scientific career crossed borders. Born Maria Skłodowska in Warsaw, she moved to Paris to study, where her research on radioactivity led to the discovery of polonium and radium. Her achievements changed physics and chemistry, and helped make X-rays a practical tool in wartime medicine. Britain was one part of that wider story: Curie spoke at London’s Royal Institution, her work helped provide Ernest Rutherford with material for investigating the atom, and the University of Edinburgh recognised her contribution to therapeutics.

From Warsaw to Paris

Curie was born on 7 November 1867 in Warsaw, then in Congress Poland within the Russian Empire. Her parents, Bronisława and Władysław Skłodowski, were teachers. Her father taught mathematics and physics, and brought laboratory equipment home after Russian authorities removed laboratory instruction from Polish schools. Because women could not enrol at a regular institution of higher education in Warsaw, Maria and her sister Bronisława studied through the clandestine Flying University. Maria also worked as a governess and continued to learn in her spare time.

She left for France in 1891 and studied physics, chemistry and mathematics at the University of Paris. She earned a physics degree in 1893 and a second degree in 1894, while tutoring to support herself. Her early scientific work in Paris included investigating the magnetic properties of steels. In 1894, she met Pierre Curie, whose work and interests brought them together. They married in 1895 and became scientific collaborators. Their daughters were Irène and Ève.

Measuring an invisible phenomenon

Curie began investigating the rays emitted by uranium after Henri Becquerel’s discovery that uranium salts gave off penetrating radiation. She used an electrometer developed by Pierre Curie and his brother to measure the electrical effects produced in the air around samples. Her results showed that a compound’s activity depended on its uranium content. She proposed that the radiation came from the atom itself, rather than from an interaction between molecules.

Comparing uranium minerals with uranium itself, Curie found that pitchblende and chalcolite were more active than their uranium content could explain. She reasoned that they must contain another, more active substance. Pierre joined the investigation, and in 1898 the couple announced two new elements. They named polonium after Maria’s native Poland, then divided among empires, and radium after the Latin word for ray. The Curies also introduced the term “radioactivity”.

Finding traces of radium was only the beginning. It was chemically difficult to separate from barium, another component of pitchblende. The Curies processed the ore through a laborious series of chemical separations. By 1902 they had obtained a small amount of radium chloride; in 1910 Curie isolated pure radium metal. She did not isolate polonium, whose short half-life made that task especially difficult.

Curie received her doctorate from the University of Paris in 1903. That June, she and Pierre were invited to give a Friday Evening Discourse on radium at the Royal Institution in London. Pierre delivered the address, while Marie attended. In December, the couple shared the Nobel Prize in Physics with Becquerel for their research into radioactivity. Curie was the first woman to receive a Nobel Prize. After Pierre died in a road accident in 1906, the University of Paris offered her his physics chair. She accepted, becoming the university’s first woman professor.

Radium, recognition and public service

In 1911, Curie received the Nobel Prize in Chemistry for the discovery of radium and polonium, the isolation of radium and the study of its properties and compounds. She was the first person to win or share two Nobel Prizes. Her work also informed research beyond her own laboratory: Ernest Rutherford used radioactive sources to investigate atomic structure. His work at the Cavendish Laboratory was part of a British scientific landscape shaped, in part, by Curie’s discoveries.

During the First World War, Curie saw the need to bring radiography closer to wounded soldiers. She secured X-ray equipment, vehicles and generators, and developed mobile radiography units known as petites Curies, or “Little Curies”. Her daughter Irène assisted her, including in the work of installing the units. Curie directed France’s Red Cross Radiology Service and helped establish a military radiology centre. She also trained women as aides. The units enabled medical staff to examine injuries in field hospitals; Curie’s wartime work put her scientific knowledge to immediate practical use.

After the war, Curie continued to build research institutions. She directed the Radium Institute in Paris, established in 1914 and active again after the interruption of war. She also helped establish the Radium Institute in Warsaw, which opened in 1932. In 1922, she joined the League of Nations’ International Committee on Intellectual Cooperation, contributing to international scientific coordination. The University of Edinburgh awarded her the Cameron Prize for Therapeutics in 1931.

Lasting scientific and medical work

Curie died at a sanatorium in Passy, France, on 4 July 1934, aged 66. She had worked for years with radioactive substances before their dangers were understood, and had also used X-ray equipment in field hospitals during the war. The account of her death links her aplastic anaemia to long-term radiation exposure, while noting that the precise contribution of different exposures is uncertain.

Her career joined experimental work to institution-building. She investigated how radioactive substances behaved, developed methods to isolate radium and helped establish laboratories where research could continue. During the war, she applied radiography to the urgent needs of field medicine. She also became a professor at the University of Paris at a time when women faced exclusion from academic careers. These accomplishments made her an influential figure in physics, chemistry and medical research without reducing her work to a single discovery or award.

Why Marie Curie deserves a place in British Legacy

Curie’s life was not a British career, and her place in British Legacy should not depend on presenting her as British. The connection is more specific: her science formed part of an international exchange that included British institutions and researchers. In 1903, she travelled to London with Pierre for a Royal Institution lecture on radium. Ernest Rutherford’s subsequent investigations into atomic structure drew on radioactive sources, placing Curie’s discoveries within the scientific context of the Cavendish Laboratory. The University of Edinburgh’s Cameron Prize for Therapeutics, awarded to her in 1931, provides another clear British link.

Her contribution also speaks to fields with lasting importance in Britain and elsewhere. Curie’s research helped establish radioactivity as an area of rigorous experimental study; her isolation of radium advanced knowledge of radioactive substances. During the First World War, she developed mobile X-ray services for field hospitals and helped train their operators. That work joined scientific research to a direct medical need. Her appointment as the first woman professor at the University of Paris, and her recognition by Edinburgh, also mark a career that crossed national and institutional boundaries at a time when women’s access to science was restricted. The evidence for her British legacy lies in these concrete connections: a London lecture, scientific influence and recognition by a British university.

Sources

Marie Curie — Wikipedia, revision 1379680433

Adapted in part from Marie Curie by Wikipedia contributors, under CC BY-SA 4.0. Text has been edited and combined with the existing article; this adapted text is shared under the same licence. Contributor history.