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Marie Curie

 
Who2 Biography: Marie Curie, Scientist
 
Marie Curie
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  • Born: 7 November 1867
  • Birthplace: Warsaw, Poland
  • Died: 4 July 1934 (leukemia)
  • Best Known As: Discoverer of radium and polonium

Name at birth: Maria Sklodowska

A towering figure in the history of chemistry and physics, Marie Curie is most famous for the discovery of the elements polonium and radium. Prohibited from higher education in her native Poland (then controlled by Russia), she moved to Paris in 1891 and studied at the Sorbonne. In 1895 Marie married Pierre Curie (who was by then a noted scientist), and together they began working on radiation experiments with uranium. (It was Marie who first coined the term "radioactivity" to describe the emission of uranic rays.) In 1898 the Curies discovered polonium and radium, and in 1903 they shared the Nobel Prize for physics with Henri Becquerel. When Pierre was killed suddenly in 1906, Marie took over his post as a professor at the Sorbonne, becoming the first woman to teach there. She was awarded a second Nobel in 1911 (this time for chemistry) for her work on radium and its compounds. Concerned more with humanitarian causes than financial rewards, Marie Curie was one of the most celebrated scientists of her time, at a time when the field was almost exclusively for men. It is thought her long exposure to radioactive materials precipitated her death.

Marie Curie was the first person to win a second Nobel Prize... She had two daughters, one of whom, Iréne, went on to win the Nobel Prize for chemistry in 1935... The element curium, discovered in 1944, is named after the Curie family.

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Scientist: Marie Sklodowska Curie
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Marie Sklodowska Curie
Library of Congress

[b. Warsaw, Poland, November 7, 1867, d. Haute Savoie, France, July 4, 1934]

Curie began working with radioactivity in 1896, the year it was discovered. She coined the word radioactivity and developed a device to measure it. Curie was the first to discover that thorium is radioactive. She also found that some uranium ore is more radioactive than uranium itself. Marie Curie and her husband Pierre Curie demonstrated in 1898 that some of the excess radioactivity was produced by previously undiscovered elements, polonium and radium.


 
Biography: Marie Sklodowska Curie
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The Polish-born French physicist Marie Sklodowska Curie (1867-1934) pioneered radioactive research by her part in the discovery of radium and polonium and in the determination of their chemical properties.

Marie Curie was born in Warsaw on Nov. 7, 1867, the youngest of the five children of Wladislaw and Bronislava Boguska Sklodowska. Marie was a brilliant student, gaining a gold medal upon completing her secondary education in 1883. As girls could not attend universities in Russian-dominated Poland, Marie at her father's suggestion spent a year in the country with friends. On returning to her father's house in Warsaw the next summer, she had to begin to earn her living through private tutoring, and she also became associated with the "Floating University," a group of young men and women who tried to quench their thirst for knowledge in semiclandestine sessions. In early 1886 she accepted a job as governess with a family living in Szczuki, but the intellectual loneliness she experienced there only stiffened her determination to achieve somehow her dream to become a university student. One of her sisters, Bronya, was already in Paris, successfully passing the examinations in medicine. In March 1890 she offered hospitality to Marie whose acceptance was a foregone conclusion, but it was not until September 1891 that she could leave for Paris.

When classes began at the Sorbonne in Paris in early November 1891, she enrolled as a student of physics. By 1894 she was desperately looking for a laboratory where she could work on her research project, the measurement of the magnetic properties of various steel alloys, and it was suggested that she see Pierre Curie at the School of Physics and Chemistry of the University of Paris. Their first meeting was movingly recorded in the future Madame Curie's recollections: "He seemed very young to me although he was then age thirty-five. I was struck by the expression of his clear gaze and by a slight appearance of carelessness in his lofty stature. His rather slow, reflective words, his simplicity, and his smile, at once grave and young, inspired confidence. A conversation began between us and became friendly; its object was some questions of science upon which I was happy to ask his opinion."

Although she was insistent from the very start that she would go back to Poland in half a year to assist her subjugated country in whatever way she could, Pierre Curie was most intent to see her more and more often. The result was that she returned to Paris in October 1894 after spending the summer months in Poland. The next summer witnessed their wedding and the beginning of a most extraordinary partnership in scientific work. By mid-1897 Curie could list as her scientific achievements two university degrees, a fellowship, and a monograph on the magnetization of tempered steel. Their first daughter, lrène, had just been born, and it was in that euphoric atmosphere that the Curies' attention turned to the mysterious radiation from uranium recently discovered by Antoine Henri Becquerel. It was Curie's hunch that the radiation was an atomic property and therefore had to be present in some other elements as well. Her search soon established the fact of a similar radiation from thorium, and the historic word "radioactivity" was coined by her.

While searching for other sources of radioactivity, the Curies had before long to turn their attention to pitchblende, a mineral well known for its uranium content. To their immense surprise the radioactivity of pitchblende far exceeded the combined radioactivity of the uranium and thorium contained in it. From their laboratory two papers reached the Academy of Sciences within 6 months. The first, read at the meeting of July 18, 1898, announced the discovery of a new radioactive element, which the Curies named polonium after Curie's native country. The other paper, announcing the discovery of radium, was read at the December 26 meeting.

To substantiate the existence of the new elements and to establish their properties, the Curies had to have sufficiently large quantities. Fortunately, the Austrian government was willing to give the Curies a ton of pitchblende, but to process it a laboratory was needed. After long search, the Curies had to settle for a shed occupying part of a courtyard in the School of Physics and Chemistry. From 1898 to 1902 the Curies processed several tons of pitchblende, but it was not only the extremely precious centigrams of radium that rewarded their superhuman labors. The Curies also published, jointly or separately, during those years a total of 32 scientific papers. Among them was the one which announced that diseased, tumor-forming cells were destroyed faster than healthy cells when exposed to radium.

From abroad came the full measure of recognition which the French Academy of Sciences refused to give in 1902, when Pierre Curie presented himself as candidate for membership. In November 1903 the Royal Society in London gave the Curies one of its highest awards, the Davy Medal; and a month later followed the announcement from Stockholm that three French scientists, A. H. Becquerel and the Curies, were the joint recipients of the Nobel Prize in physics for 1903. Finally even the academics in Paris began to stir and a chair in physics was created at the University of Paris, and a few months later Curie was appointed director of research associated with the new chair. In December 1904 their second daughter Ève, was born; while the next year brought the election of Pierre Curie to the Academy of Sciences and their travel to Stockholm, where he delivered on June 6 the Nobel lecture, which was in fact their joint address. Its concluding paragraph evoked in prophetic words the double-edged impact on mankind of every major scientific advance. Still Pierre Curie asserted his conviction that "mankind will derive more good than harm from the new discoveries."

The illustrious husband-and-wife team, now installed in more appropriate academic positions, had, however, their happy days numbered. The first academic year of Pierre Curie in his new professorship was not over when, on the rainy mid-afternoon of April 19, 1906, he was run down by a heavy carriage and killed instantly. Two weeks later the widow was asked to take over her late husband's post. Honors began to pour in from scientific societies all over the world on a woman left alone with two small children and with the gigantic task of leadership in radioactivity. In 1908 she began to give as titular professor at the Sorbonne the first, and then the only, course on radioactivity in the world. In the same year she edited the collected works of her late husband, and in 1910 she published her massive Traitéde radioactivité. The next year the Academy of Sciences showed once more its true colors by denying with a one-vote majority the membership to the person who 11 months later became the first to receive twice the Nobel Prize, this time in chemistry.

In addition to the Nobel Prize the two finest honors that came to Curie in 1911 were her election as permanent member of the Solvay Conferences in physics and the erection in Warsaw of the Institute of Radioactivity, whose directorship was offered to her by a most distinguished group of Polish intellectuals. The first of these honors reflected on her stature as a scientist. The second honor was more of an emotional satisfaction and represented some temptation for her to turn her back on the unappreciative scientific establishment of her adopted country. But she decided to stay in France, though she did her best to assist the new institute in Warsaw in every possible way. A most important factor in Curie's decision to stay was the future of the laboratory which Dr. P. P.E. Roux, the director of the Pasteur Institute, proposed to build for her. The plan finally jolted the Sorbonne to join hands with the Pasteur Institute in establishing the famous Radium Institute. Its dedication took place in July 1914, a year after the institute in Warsaw had been dedicated in her presence.

Curie devoted much of her time during the 4 years of World War I to equipping automobiles in her own laboratory with x-ray (Roentgen) apparatus to assist the sick. It was these cars that became known in the war zone as "little Curies." By the end of the war Curie was past her fiftieth year with much of her physical energy already spent, together with her savings, which she had patriotically invested in war bonds. But her dedication seemed to be inexhaustible. The year 1919 witnessed her installation at the Radium Institute, and 2 years later her book La Radiologie et la guerre was published. In it she gave a most informative account of the scientific and human experiences gained for radiology during the war. With the end of the war also came the appointment of her daughter Irène, a physicist, as an assistant in her mother's laboratory.

Shortly afterward, a momentous visit took place in the Radium Institute. The visitor was Mrs. William B. Meloney, editor of a leading magazine in New York and representative of those countless women who for years had found in Curie their ideal and inspiration. A year later Meloney returned to tell her that a nationwide subscription in America had produced the sum of $100,000 needed to purchase a gram of radium for her institute. She was also asked to visit the United States with her daughters and collect in person the precious gift. Her trip was a triumph in the finest sense of the word. In the White House, President Warren G. Harding presented her with the golden key to the little metal box containing the radium.

On questions other than scientific, Curie rarely uttered public comment of any length. One of the exceptions was her statement at a conference in 1933 on "The Future of Culture." There she rallied to the defense of science, which several panelists held responsible for the dehumanization of modern life. "I am among those," she emphasized, "who think that science has great beauty. A scientist in his laboratory is not only a technician; he is also a child placed before natural phenomena which impress him like a fairy tale. We should not allow it to be believed that all scientific progress can be reduced to mechanism, machines, gearings, even though such machinery also has its own beauty."

The most heartwarming experience of the last phase of Curie's life was probably the marriage of Irène in 1926 to Frédéric Joliot (later Joliot-Curie), the most gifted assistant at the Radium Institute. Before long it was evident to her that their union would be a close replica of her own marvelously creative partnership with Pierre Curie.

She worked almost to the very end and succeeded in completing the manuscript of her last book, Radioactivité. In the last years her great support was her younger daughter, Ève. She was also her mother's faithful companion when, on July 4, 1934, death claimed the one of whom Albert Einstein aptly said, "Marie Curie is, of all celebrated beings, the only one whom fame has not corrupted."

Further Reading

The classic biography of Marie Curie, written by her daughter, Ève Curie, is Madame Curie (trans. 1937), a work which emphasizes the human element. Nobel Lectures: Physics, 1901-1921 (1967), published by the Nobel Foundation, includes a biographical sketch. General background works which discuss Curie include Gerald Holton and Duane H. D. Roller, Foundations of Modern Physical Science (1958), and Henry A. Boorse and Lloyd Motz, eds., The World of the Atom (2 vols., 1966).

 

Marie Curie.
(click to enlarge)
Marie Curie. (credit: The Granger Collection, New York)
(born Nov. 7, 1867, Warsaw, Pol., Russian Empire — died July 4, 1934, near Sallanches, France) Polish-born French physical chemist. She studied at the Sorbonne (from 1891). Seeking the presence of radioactivity — recently discovered by Henri Becquerel in uranium — in other matter, she found it in thorium. In 1895 she married fellow physicist Pierre Curie (1859 – 1906). Together they discovered the elements polonium (which Marie named after her native Poland) and radium, and they distinguished alpha, beta, and gamma radiation. For their work on radioactivity (a term she coined), the Curies shared the 1903 Nobel Prize for Physics with Becquerel. Marie thus became the first woman to receive a Nobel Prize. After Pierre's death, Marie was appointed to his professorship and became the first woman to teach at the Sorbonne. In 1911 she won a Nobel Prize for Chemistry for discovering polonium and isolating pure radium, becoming the first person to win two Nobel Prizes. She died of leukemia caused by her long exposure to radioactivity. In 1995 she became the first woman whose own achievements earned her the honour of having her ashes enshrined in the Pantheon in Paris. See also Frédéric Joliot-Curie.

For more information on Marie Curie, visit Britannica.com.

 

Curie, Marie, née Sklodowska (1867-1934). Physicist. Born in Poland, she was one of the first scientists to investigate the phenomenon which she named radio-activity. She and her fellow physicist, Pierre Curie (1859-1906), whom she married, discovered the elements polonium and radium (1898), and gave their name to a measure of radioactivity. She became the first woman professor at the Sorbonne, against considerable odds, and a champion and role model for higher education opportunities for women. Her pioneering work gained her Nobel Prizes for physics (1903) and chemistry (1911). Her daughter and son-in-law, Irène and Frédéric Joliot-Curie, were also Nobel Prize-winning nuclear physicists.

[Michael Kelly]

 
Spotlight: Marie Curie
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From our Archives: Today's Highlights, April 20, 2005

Scientists Marie and Pierre Curie isolated the radioactive element radium on this date in 1902. A very rare metal, radium is found in minute amounts in uranium ore. In 1903 the Curies shared the Nobel Prize for physics with Henri Becquerel. Their daughter, Irene, and her husband, Frederic Joliot, won a Nobel Prize for Chemistry in 1935, for figuring out a way to synthesize new radioactive elements.
 
Curie (kürē') , family of French scientists. Pierre Curie, 1859–1906, scientist, and his wife, Marie Sklodowska Curie, 1867–1934, chemist and physicist, b. Warsaw, are known for their work on radioactivity and on radium. The Curies' daughter Irène (see under Joliot-Curie, family) was also a scientist.

Pierre Curie's early work dealt with crystallography and with the effects of temperature on magnetism; he discovered (1883) and, with his brother Jacques Curie, investigated piezoelectricity (a form of electric polarity) in crystals. Marie Sklodowska's interest in science was stimulated by her father, a professor of physics in Warsaw. In 1891 she went to Paris to continue her studies at the Sorbonne. In 1895 she married Pierre Curie and engaged in independent research in his laboratory at the municipal school of physics and chemistry where Pierre was director of laboratories (from 1882) and professor (from 1895).

Following A. H. Becquerel's discovery of radioactivity, Mme Curie began to investigate uranium, a radioactive element found in pitchblende. In 1898 she reported a probable new element in pitchblende, and Pierre Curie joined in her research. They discovered (1898) both polonium and radium, laboriously isolated one gram of radium salts from about eight tons of pitchblende, and determined the atomic weights and properties of radium and polonium. The Curies refused to patent their processes or otherwise to profit from the commercial exploitation of radium. For their work on radioactivity they shared with Becquerel the 1903 Nobel Prize in Physics.

The Sorbonne created (1904) a special chair of physics for Pierre Curie; Marie Curie was appointed his successor after his death in a street accident. She also retained her professorship (assumed in 1900) at the normal school at Sèvres and continued her research. In 1910 she isolated (with André Debierne) metallic radium. As the recipient of the 1911 Nobel Prize in Chemistry she was the first person to be awarded a second Nobel Prize. She was made director of the laboratory of radioactivity at the Curie Institute of Radium, established jointly by the Univ. of Paris and the Pasteur Institute, for research on radioactivity and for radium therapy.

During World War I, Mme Curie devoted her energies to providing radiological services for hospitals. In 1921 a gram of radium, a gift from American women, was presented to her by President Harding; this she accepted in behalf of the Curie Institute. A second gram, presented in 1929, was given by Mme Curie to the newly founded Curie Institute in Warsaw. Five years later she died from the effects of radioactivity. In 1995 Marie and Pierre Curie's ashes were enshrined in the Panthéon, Paris; she was the first woman to be honored so in her own right.

Bibliography

Among the numerous and valuable writings of the Curies are Marie Curie's doctoral dissertation, Radioactive Substances (1902, 2 vol.; tr. 1961); Traité de radioactivité (1910); Radioactivité (1935); and her biography of Pierre Curie (1923, tr. 1923). Pierre Curie's collected works appeared in 1908. A biography of Marie Curie was written by a daughter, Ève Curie (tr. 1937). See also biographies by R. W. Reid (1974), F. Giroud (tr. 1986), S. Quinn (1995), and B. Goldsmith (2004).

 
Science Dictionary: Marie Curie
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(kyoor-ee, kyoo-ree)

A French chemist of the late nineteenth and early twentieth centuries, born in Poland. With her husband, Pierre Curie, she discovered the element radium.

  • Marie Curie was the first major female scientist of modern times.
  • Marie Curie was the only person ever to win the Nobel Prize in two different sciences (physics and chemistry).
  •  
    Quotes By: Madame Marie Curie
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    Quotes:

    "I am one of those who think like Nobel, than humanity will draw more good than evil from new discoveries."

    "Nothing in life is to be feared. It is only to be understood."

    "I was taught that the way of progress I neither swift nor easy."

    "You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful."

    "All my life through, the new sights of Nature made me rejoice like a child."

     
    Wikipedia: Marie Curie
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    Marie Skłodowska–Curie

    Born 7 November 1867(1867-11-07)
    Warsaw, Vistula Country, Russian Empire
    Died 4 July 1934 (aged 66)
    Passy, France
    Citizenship Russian, later French
    Nationality Polish
    Fields physics, chemistry
    Institutions University of Paris
    Alma mater University of Paris
    ESPCI
    Doctoral advisor Henri Becquerel
    Doctoral students André-Louis Debierne
    Óscar Moreno
    Marguerite Catherine Perey
    Known for radioactivity, polonium, radium
    Notable awards Nobel Prize in Physics (1903)
    Davy Medal (1903)
    Matteucci Medal (1904)
    Nobel Prize in Chemistry (1911)
    Religious stance Agnostic
    Notes
    She is the only person to win Nobel Prizes in two sciences.
    She was the wife of Pierre Curie, and the mother of Irene Joliot-Curie and Ève Curie.

    Marie Skłodowska Curie (November 7, 1867 – July 4, 1934) was a physicist and chemist of Polish upbringing and, subsequently, French citizenship. She was a pioneer in the field of radioactivity, the first person honored with two Nobel Prizes,[1] and the first female professor at the University of Paris.

    She was born Maria Skłodowska in Warsaw (then Vistula Country, Russian Empire; now Poland) and lived there until she was 24. In 1891 she followed her elder sister Bronisława to study in Paris, where she obtained her higher degrees and conducted her subsequent scientific work. She founded the Curie Institutes in Paris and Warsaw. Her husband Pierre Curie was a Nobel co-laureate of hers, and her daughter Irène Joliot-Curie and son-in-law Frédéric Joliot-Curie also received Nobel prizes.

    Her achievements include the creation of a theory of radioactivity (a term coined by her[2]), techniques for isolating radioactive isotopes, and the discovery of two new elements, polonium and radium. It was also under her personal direction that the world's first studies were conducted into the treatment of neoplasms (cancers), using radioactive isotopes.

    While an actively loyal French citizen, she never lost her sense of Polish identity. She named the first new chemical element that she discovered (1898) polonium for her native country,[3] and in 1932 she founded a Radium Institute (now the Maria Skłodowska–Curie Institute of Oncology) in her home town Warsaw, headed by her physician-sister Bronisława.

    Contents

    Early life in Poland

    Maria Skłodowska's birthplace on ulica Freta in Warsaw's "New Town."
    Dołęga coat-of-arms, hereditary in Skłodowska's family

    Maria Skłodowska was born in Warsaw, Poland, on November 7, 1867, the fifth and youngest child of well-known teachers Bronisława and Władysław Skłodowski. Maria's older siblings were Zofia (born 1862), Józef (1863), Bronisława (1865) and Helena (1866).

    Maria's grandfather Józef Skłodowski had been a respected teacher in Lublin, where he had taught the young Bolesław Prus.[4] Her father Władysław Skłodowski taught mathematics and physics, subjects that Maria was to pursue, and was director successively of two Warsaw gymnasia for boys, in addition to lodging boys in the family home. Her mother, Bronisława, operated a prestigious Warsaw girls' boarding school; she suffered from tuberculosis and died when Maria was twelve. Maria's father was an atheist, and her mother a devout Catholic.[5]

    Two years earlier, Maria's oldest sibling, Zofia, had died of typhus. The deaths of her mother and sister, according to Robert William Reid, caused Maria to give up Catholicism and become agnostic.[6]

    When she was ten years old, Maria began attending the boarding school that her mother had operated while she was well; next Maria attended a female gymnasium, from which she graduated on 12 June 1883. She spent the following year in the countryside at her father's relatives, and next with her father in Warsaw, where she did some tutoring.

    On both the paternal and maternal sides, the family had lost their property and fortunes through patriotic involvements in Polish national uprisings. This condemned each subsequent generation, including that of Maria and her elder sisters and brother, to a difficult struggle to get ahead in life.[7]

    Maria made an agreement with her sister Bronisława, that she would give her financial assistance during Bronisława's medical studies in Paris, in exchange for similar assistance two years later.[8] In connection with this, she took a position as governess. First with a lawyer's family in Kraków, then for two years in Ciechanów with a landed family, the Żorawskis, relatives of her father. While working for the latter family, she fell in love with their son Kazimierz Żorawski, which the future eminent mathematician reciprocated. His parents, however, rejected the idea of his marrying the penniless relative, and Kazimierz was unable to oppose them. Maria lost her governess' position.[9] She found another with the Fuchs family in Sopot, on the Baltic Sea coast, where she spent the next year, all the while financially assisting her sister.

    Krakowskie Przedmieście 66, near Warsaw's Old Town (in the distance). As noted on the plaque, it was here, in 1890–91, that Maria Skłodowska did her first scientific work.
    Kazimierz Żorawski in later life

    At the beginning of 1890, Bronisława, who had a few months earlier married Kazimierz Dłuski, invited Maria to join them in Paris. Maria declined because she could not afford the university tuition and was still counting on marrying Kazimierz Żorawski. She returned home to her father, with whom she remained till the fall of 1891, tutoring, studying at the clandestine Floating University, and beginning her practical scientific training in a laboratory at the Museum of Industry and Agriculture run by her cousin Józef Boguski, who had been assistant in St. Petersburg to the great Russian chemist Dmitri Mendeleyev.[10]

    In October 1891, at her sister's insistence and after receiving a letter from Żorawski definitively breaking up with her, she decided to go to France after all.[5]

    Maria's breakup with Żorawski was tragic for both. He soon earned a doctorate and pursued an academic career as a mathematician, becoming a professor and rector of Kraków University and president of the Warsaw Society of Learning; still, as an old man, a mathematics professor at the Warsaw Polytechnic, he would sit contemplatively in front of the statue of Maria Skłodowska before the Radium Institute that she had founded.[11] Maria, in Paris, briefly found shelter with her sister and brother-in-law before renting a primitive garret[12] and proceeding with her studies of physics, chemistry and mathematics at the Sorbonne (the University of Paris).

    Sorbonne

    Skłodowska studied during the day, and she tutored evenings, barely earning her keep. In 1893 she obtained a degree in physics and began work in an industrial laboratory at Lippman's. Meanwhile she continued studying at the Sorbonne and in 1894 earned a degree in mathematics.

    In the same year Pierre Curie entered her life. He was an instructor in the School of Physics and Chemistry, the École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI). Skłodowska had begun her scientific career in Paris with an investigation of the magnetic properties of various steels; it was their mutual interest in magnetism that drew Skłodowska and Curie together.[13].

    Her departure for the summer to Warsaw only enhanced their mutual feelings for each other. She was still laboring under the illusion that she would be able to return to Poland and work in her chosen field of study. When, however, she was denied a place at Kraków University merely because she was a woman,[14] she returned to Paris. Almost a year later, in July 1895, she and Pierre Curie married, and thereafter the two physicists hardly ever left their laboratory. Their shared hobbies were only long bicycle trips and journeys abroad, which brought them even closer. Maria had found a new love, a partner and scientific collaborator that she could depend on.[15]

    New elements

    In 1896 Henri Becquerel discovered that uranium salts emitted rays that resembled X-rays in their penetrating power. He demonstrated that this radiation, unlike phosphorescence, did not depend on an external source of energy but seemed to arise spontaneously from uranium itself. Becquerel had in fact discovered radioactivity.

    Skłodowska–Curie decided to look into uranium rays as a possible field of research for a thesis. She used a clever technique to investigate samples. Fifteen years earlier, her husband and his brother had invented the electrometer, a device for measuring extremely low electrical currents. Using the Curie electrometer, she discovered that uranium rays caused the air around a sample to conduct electricity.[16] Her first result, using this technique, was the finding that the activity of the uranium compounds depended only on the amount of uranium present. She had shown that the radiation was not the outcome of some interaction between molecules but must come from the atom itself. In scientific terms, this was the most important single piece of work that she carried out.[17]

    Skłodowska–Curie's systematic studies had included two uranium minerals, pitchblende and torbernite. Her electrometer showed that pitchblende was four times as active as uranium itself, and chalcolite twice as active. She concluded that, if her earlier results relating the amount of uranium to its activity were correct, then these two minerals must contain small amounts of some other substance far more active than uranium itself.[18]

    The idea [writes Reid] was her own; no one helped her formulate it, and although she took it to her husband for his opinion she clearly established her ownership of it. She later recorded the fact twice in her biography of her husband to ensure there was no chance whatever of any ambiguity. It [is] likely that already at this early stage of her career [she] realized that... many scientists would find it difficult to believe that a woman could be capable of the original work in which she was involved.[19]

    In her systematic search for other substances besides uranium salts that emitted radiation, Skłodowska–Curie had found that the element thorium was likewise radioactive.

    Pierre and Marie Curie in their Paris lab, before 1907

    She was acutely aware of the importance of promptly publishing her discoveries and thus establishing her priority. Had Becquerel, two years earlier, not presented his discovery to the Académie des Sciences the day after he made it, credit for the discovery of radioactivity, and even a Nobel Prize, would instead have gone to Silvanus Thompson. Skłodowska–Curie chose the same rapid means of publication. Her paper, giving a brief, simple account of her work, was presented for her to the Académie on April 12, 1898, by her former professor, Gabriel Lippmann.[20]

    Even so, just as Thompson had been beaten by Becquerel, so Skłodowska–Curie was beaten in the race to tell of her discovery that thorium gives off rays in the same way as uranium. Two months earlier, Gerhard Schmidt had published his own finding in Berlin.[21]

    No one else in the world of physics had, however, yet noticed what Skłodowska–Curie recorded in a sentence of her paper in describing how much greater were the activities of pitchblende and chalcolite compared with uranium itself: "The fact is very remarkable, and leads to the belief that these minerals may contain an element which is much more active than uranium." She would later recall how she felt "a passionate desire to verify this hypothesis as rapidly as possible."[22]

    Pierre Curie was sure that what she had discovered was not a spurious effect. He was so intrigued that he decided to temporarily drop his work on crystals and join her. On 14 April 1898, they optimistically weighed out a 100-gram sample of pitchblende and ground it with a pestle and mortar. They did not then realize that what they were searching for was present in such minute quantities that they would eventually have to process tons of the ore.[23]

    In July 1898, Skłodowska–Curie and her husband together published a paper announcing the existence of an element which they named "polonium," in honor of her native Poland, which would for another twenty years remain partitioned among three empires. On 26 December 1898, the Curies announced the existence of a second element, which they named "radium" for its intense radioactivity — a word that they coined.

    Pitchblende is a complex mineral, and the chemical separation of its constituents was an arduous task. The discovery of polonium had been relatively easy; chemically it resembles the element bismuth, and polonium was the only bismuth-like substance in the ore. But radium was more elusive; it is closely related chemically to barium, and pitchblende contains both elements. By 1898 the Curies had obtained traces of radium, but appreciable quantities, uncontaminated with barium, were still beyond reach.[24]

    The Curies undertook the arduous task of separating out radium salt by differential crystallization. From a ton of pitchblende, one-tenth of a gram of radium chloride was separated in 1902. By 1910 Skłodowska–Curie, working on without her husband, who had been killed in 1906, had isolated the pure radium metal.[25]

    In an unusual decision, Marie Skłodowska–Curie intentionally refrained from patenting the radium-isolation process so that the scientific community could do research unhindered.[26]

    Since they were unaware of the deleterious effects of radiation exposure attendant on their chronic unprotected work with radioactive substances, Skłodowska–Curie and her husband had no idea what price they were paying for their research.[15]

    In 1903, under the supervision of Henri Becquerel,[27] Marie received her DSc from the University of Paris.

    Nobel Prizes

    Maria's 1911 Nobel Prize photo

    In 1903, the Royal Swedish Academy of Sciences awarded Pierre Curie, Marie Curie, and Henri Becquerel the Nobel Prize in Physics, "in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel."

    Skłodowska–Curie and her husband were unable to go to Stockholm to receive the prize in person, but they shared its financial proceeds with needy acquaintances, including students.[15]

    On receiving the Nobel Prize, Marie and Pierre Curie suddenly became very famous. The Sorbonne gave Pierre a professorship and permitted him to establish his own laboratory, in which Skłodowska–Curie became director of research.

    Maria Skłodowska–Curie's 1911 Nobel Prize diploma

    In 1897 and 1904, respectively, Skłodowska–Curie gave birth to their daughters, Irène and Eve Curie. She would later hire Polish governesses to teach them her native language, and send or take them on visits to Poland.[28]

    Skłodowska–Curie was the first woman to be awarded a Nobel Prize. Eight years later, she would receive the 1911 Nobel Prize in Chemistry, "in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element."

    A month after accepting her 1911 Nobel Prize, she was hospitalized with depression and a kidney ailment.

    Skłodowska–Curie was the first person to win or share two Nobel Prizes. She is one of only two people who have been awarded a Nobel Prize in two different fields, the other being Linus Pauling (Chemistry, Peace). Nevertheless in 1911 the French Academy of Sciences refused to abandon its prejudice against women and she failed by two votes to be elected to membership, losing to Édouard Branly, an inventor who had helped Guglielmo Marconi develop the wireless telegraph.[29] It would be her doctoral student, Marguerite Perey, who would be the first woman elected to the Academy — in 1962, over half a century later.

    Pierre's death

    On April 19, 1906, Pierre was killed in a street accident. Walking across the Rue Dauphine in heavy rain, he was struck by a horse-drawn vehicle and fell under its wheels, fracturing his skull. While it has been speculated that he may previously have been weakened by prolonged radiation exposure, it has not been proven that this was the cause of the accident.

    Skłodowska–Curie was devastated by her husband's death. She noted that as of that moment she had suddenly become "an incurably and wretchedly lonely person." On May 13, 1906, the Sorbonne physics department decided to retain the chair that had been created for Pierre Curie and entrusted it to Skłodowska–Curie together with full authority over the laboratory. This allowed her to emerge from Pierre's shadow. She became the first female professor at the Sorbonne, and sought in her exhausting work regime a meaning for her life.

    Paul Langevin in later life

    Recognition for her work now grew to a crescendo, and in 1911 the Royal Swedish Academy of Sciences awarded her a second Nobel Prize. A delegation of celebrated Polish men of learning, headed by world-famous novelist Henryk Sienkiewicz, besought her to return to Poland and continue her research in her native country.[15]

    In 1911, too, it transpired that in 1910–11 Skłodowska–Curie had conducted an affair of about a year's duration with physicist Paul Langevin, an ex-student of Pierre Curie's[30]—a married man who had left his wife. This resulted in a press scandal, exploited by her academic opponents. Despite her fame as a scientist working for France, the public's attitude tended toward xenophobia—the same that had led to the Dreyfus Affair and that now fueled false speculation that Skłodowska–Curie was Jewish. Five years Langevin's senior, she was portrayed in the tabloids as a home-wrecker.[31] Later, Skłodowska–Curie's granddaughter, Hélène Joliot, would marry Langevin's grandson, Michel Langevin.

    Skłodowska–Curie's second Nobel Prize, in 1911, enabled her to talk the French government into funding the building of a private Radium Institute (Institut du radium, now the Institut Curie), which was built in 1914 and at which research was conducted in chemistry, physics and medicine. The Institute became a cradle of Nobel Prize winners, producing four more, including her daughter Irène Joliot-Curie and her son-in-law, Frédéric Joliot-Curie.

    World War I

    During World War I, Skłodowska-Curie pushed for the use of mobile radiography units, which came to be popularly known as petites Curies ("Little Curies"), for the treatment of wounded soldiers. These units were powered using tubes of radium emanation, a colorless, radioactive gas given off by radium, later identified as radon. Skłodowska-Curie personally provided the tubes, derived from the radium she purified. Also, promptly after the war started, she donated her and her husband's gold Nobel Prize medals for the war effort.

    Post-war years

    In 1921, Skłodowska-Curie toured the United States, where she was welcomed triumphantly, to raise funds for research on radium. These distractions from her scientific labors, and the attendant publicity, caused her much discomfort but provided resources for her work. Her second American tour in 1929 succeeded in equipping the Warsaw Radium Institute, founded in 1925 with her sister Bronisława as director.

    In her later years, Skłodowska-Curie headed the Pasteur Institute and a radioactivity laboratory created for her by the University of Paris.

    Skłodowska–Curie visited Poland a last time in the spring of 1934.[15]

    Death

    Only a couple of months later, Skłodowska-Curie died. Her death on July 4, 1934, at the Sancellemoz Sanatorium in Passy, in Haute-Savoie, eastern France, was from aplastic anemia, almost certainly contracted from exposure to radiation. The damaging effects of ionizing radiation were then not yet known, and much of her work had been carried out in a shed without any safety measures. She had carried test tubes containing radioactive isotopes in her pocket and stored them in her desk drawer, remarking on the pretty blue-green light that the substances gave off in the dark.[citation needed]

    She was interred at the cemetery in Sceaux, alongside her husband Pierre. Sixty years later, in 1995, in honor of their achievements, the remains of both were transferred to the Paris Panthéon. She became the first woman so honored.

    Her laboratory is preserved at the Musée Curie.

    Due to their levels of radioactivity, her papers from the 1890s (and even her cookbook) are considered too dangerous to handle. They are kept in lead-lined boxes; those who wish to consult them must wear protective clothing.[32]

    Legacy

    The Curies' work contributed substantially to shaping the world of the 20th and 21st centuries, in both its physical and societal aspects. L. Pearce Williams observes:

    The result of the Curies' work was epoch-making. Radium's radioactivity was so great that it could not be ignored. It seemed to contradict the principle of the conservation of energy and therefore forced a reconsideration of the foundations of physics. On the experimental level the discovery of radium provided men like Ernest Rutherford with sources of radioactivity with which they could probe the structure of the atom. As a result of Rutherford's experiments with alpha radiation, the nuclear atom was first postulated. In medicine, the radioactivity of radium appeared to offer a means by which cancer could be successfully attacked.[25]

    If the work of Maria Skłodowska–Curie helped overturn established ideas in physics and chemistry, it has had an equally profound effect in the societal sphere. In order to attain her scientific achievements, she had to overcome barriers that were placed in her way as a woman in both her country of origin and her adoptive country. This aspect of her life and career is highlighted in Françoise Giroud's Marie Curie: A Life, which emphasizes Skłodowska's role as a feminist precursor. She was ahead of her time, emancipated, independent, and in addition uncorrupted. Albert Einstein is supposed to have remarked that she was probably the only person who was not corrupted by the fame that she had won.[33]

    Awards

    Marie Skłodowska-Curie was the first woman to win a Nobel prize and the first person to win two Nobel Prizes.

    The life of even famous scientists is not luxurious. The Curies reportedly used part of their award money to replace wallpaper in their Parisian home and install modern plumbing with a bathroom.[34]

    Honors

    Madame Curie was decorated with the French Legion of Honor. In Poland, she had received honorary doctorates from the Lwów Polytechnic (1912), Poznań University (1922), Kraków's Jagiellonian University (1924) and the Warsaw Polytechnic (1926).

    The Curies' elder daughter, Irène Joliot-Curie, won a Nobel Prize for Chemistry in 1935 for discovering that aluminium could be made radioactive and emit neutrons when bombarded with alpha rays. The younger daughter, Ève Curie, wrote a biography of her late mother.

    In 1936, Michalina Mościcka, wife of Polish President Ignacy Mościcki, unveiled a statue of the scientist in front of Warsaw's Curie Institute, the former Radium Institute. Eight years later, the monument suffered from gunfire during the 1944 Warsaw Uprising; but after the war, when maintenance work was being done, it was decided not to remove these scars.[15]

    In 1967, a museum devoted to Skłodowska–Curie was established in Warsaw's "New Town," in her birthplace on ulica Freta (Freta Street).[15]

    Tributes

    As one of the most famous female scientists to date, Marie Curie has been an icon in the scientific world and has inspired many tributes and recognitions.

    In 1995, she was the first woman laid to rest under the famous dome of the Paris Panthéon, alongside her husband, Pierre Curie.

    The curie (symbol Ci), a unit of radioactivity, is named in her and/or Pierre's honour,[35][36] as is the element with atomic number 96 — curium.

    Three radioactive minerals are named after the Curies: curite, sklodowskite, and cuprosklodowskite.

    Skłodowska-Curie's likeness appeared on the Polish late-1980s inflationary 20,000-złoty banknote. Her likeness has also appeared on stamps and coins, and on the last French 500-franc note, before the franc was replaced by the euro.

    Polish institutions named after Maria Skłodowska–Curie include:

    French institutions named after Maria Skłodowska–Curie include:

    American institutions named after Maria Skłodowska–Curie include:

    • Curie Community at the Loyola University Stritch School of Medicine, in Chicago, a memorial gathering room for students at the university.

    Greer Garson and Walter Pidgeon starred in the 1943 U.S. Oscar-nominated film, Madame Curie, based on her life. "Marie Curie" is also the name of a character in a 1988 comedy, Young Einstein, by Yahoo Serious.

    • In 2009 Marie Curie was voted "The greatest woman scientist of all time" in a poll carried out by New Scientist magazine on behalf of the L'Oreal UNESCO 'For Women In Science' programme. Curie received 25.1 per cent of all the votes cast, nearly twice as much as her nearest rival Rosalind Franklin (14.2 per cent). [38]

    See also

    Notes

    1. ^ "Nobel Laureate Facts". http://nobelprize.org/nobel_prizes/nobelprize_facts.html. Retrieved on 2008-11-26. 
    2. ^ Robert Reid, Marie Curie, p. 184.
    3. ^ Poland had been partitioned in the 18th century among Russia, Prussia and Austria, and it was Skłodowska–Curie's hope that naming the element after her native country would bring world attention to its lack of independence. Polonium may have been the first chemical element named to highlight a political question. K. Kabzinska, "Chemical and Polish Aspects of Polonium and Radium Discovery," Przemysł chemiczny (The Chemical Industry), 77:104–7, 1998.
    4. ^ Robert Reid, Marie Curie, p. 12.
    5. ^ a b Eve Curie, Marie Curie.
    6. ^ Reid, Robert William (1974). Marie Curie. London: Collins. pp. 19. ISBN 0-00-211539-5.  "Unusually at such an early age, she became what T.H. Huxley had just invented a word for: agnostic."
    7. ^ Wojciech A. Wierzewski, "Mazowieckie korzenie Marii" ("Maria's Mazowsze Roots") [1], Gwiazda Polarna (The Pole Star), a Polish-American biweekly, no. 13, 21 June 2008, pp. 16–17.
    8. ^ Marie Curie, Autobiography.
    9. ^ Susan Quinn, Marie Curie: A Life.
    10. ^ Another of Skłodowska's teachers at the Museum, Napoleon Milicer, had been a pupil of Robert Bunsen. Robert Reid, Marie Curie, pp. 23–24.
    11. ^ Robert Reid, Marie Curie, p. 24.
    12. ^ Robert Reid, Marie Curie, p. 32.
    13. ^ L. Pearce Williams, "Curie, Pierre and Marie," Encyclopedia Americana, vol. 8, p. 331.
    14. ^ Wierzewski, p. 17.
    15. ^ a b c d e f g Wierzewski, p. 17.
    16. ^ Marie Curie and the Science of Radioactivity. http://www.aip.org/history/curie/resbr1.htm. 
    17. ^ Robert Reid, Marie Curie, pp. 61–63.
    18. ^ Robert Reid, Marie Curie, pp. 63–64.
    19. ^ Robert Reid, Marie Curie, p. 64.
    20. ^ Robert Reid, Marie Curie, pp. 64–65.
    21. ^ Robert Reid, Marie Curie, p. 65. Such multiple independent discoveries appear in fact to be the rule in science and technology; see List of independent discoveries.
    22. ^ Robert Reid, Marie Curie, p. 65.
    23. ^ Robert Reid, Marie Curie, p. 65.
    24. ^ L. Pearce Williams, pp. 331–32.
    25. ^ a b L. Pearce Williams, p. 332.
    26. ^ Robert Reid, Marie Curie, p. 265.
    27. ^ Mould, R. F. (1998). "The discovery of radium in 1898 by Maria Sklodowska-Curie (1867–1934) and Pierre Curie (1859–1906) with commentary on their life and times" (PDF). The British Journal of Radiology 71: 1229–1254. http://bjr.birjournals.org/cgi/reprint/71/852/1229.pdf. Retrieved on 2008-07-31. 
    28. ^ Barbara Goldsmith, Obsessive Genius, p. 149.
    29. ^ Barbara Goldsmith, Obsessive Genius, pp. 170–71.
    30. ^ Robert Reid, Marie Curie, pp. 44, 90.
    31. ^ Barbara Goldsmith, Obsessive Genius, pp. 165–76.
    32. ^ Bryson, A Short History of Nearly Everything, p. 148.
    33. ^ Wierzewski, p. 16.
    34. ^ The People's Almanac, David Wallechinsky and Irving Wallace, 1975, Doubleday and Company
    35. ^ curie - Britannica Online Encyclopedia
    36. ^ Paul W. Frame. "How the Curie Came to Be". http://www.orau.org/ptp/articlesstories/thecurie.htm. Retrieved on 2008-04-30. 
    37. ^ http://www.airliners.net/open.file/1207719/L/. Thierry Deutsch. Retrieved 2007-12-20
    38. ^ "Marie Curie voted greatest female scientist". www.telegraph.co.uk. http://www.telegraph.co.uk/scienceandtechnology/science/sciencenews/5715220/Marie-Curie-voted-greatest-female-scientist.html. "Marie Curie, the Nobel Prize-winning nuclear physicist has been voted the greatest woman scientist of all time." 

    References

    At First Solvay Conference (1911), Skłodowska-Curie (seated, 2nd from right) confers with Henri Poincaré. Standing, 4th from right, is Rutherford; 2nd from right, Einstein; far right, Paul Langevin.

    Fiction

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    From Today's Highlights
    July 25, 2005

    I never see what has been done. I only see what remains to be done.
    - Madame Curie

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