Marie Curie was never given an IQ test. The ≈185 is a later retrospective estimate — she was born after the 1850 cut-off of Cox's 1926 study, so not even Cox's method covers her.
Barred at home, first in her class abroad
Maria Skłodowska was born in Warsaw in 1867, under Russian rule, where women could not attend university. She worked as a governess to fund her sister's medical studies in Paris, on the understanding that her sister would help her in turn.
The youngest of five children of two teachers, she lost her eldest sister to typhus and her mother to tuberculosis before she was eleven.
Education, one lab-notebook page at a time
From an illegal university in occupied Warsaw to the first science doctorate awarded to a woman in France.
Graduated at 15 with a gold medal, top of her class — then suffered a collapse and spent a year in the countryside.
A clandestine, rotating night school that admitted women, defying Russian authorities.
Her first laboratory practice, in a Warsaw lab run by her cousin.
Lived on bread and tea in a Latin Quarter attic; graduated first in her class.
Second in her class, funded by the Alexandrovitch scholarship for Polish students.
“Researches on Radioactive Substances” — the first science doctorate awarded to a woman in France.
The two elements she found, decaying
She coined the word “radioactivity” and, with Pierre, found two new elements in pitchblende. Pick one and run the clock: every half-life, half the remaining atoms decay.
Isolating them meant processing tonnes of pitchblende by hand in a leaking shed. She named polonium after occupied Poland. The 1903 physics prize, shared with Pierre and Henri Becquerel, came for radioactivity; the 1911 chemistry prize, hers alone, for the elements.
After Pierre's death in a street accident in 1906 she took over his professorship — the first woman to teach at the Sorbonne. In the First World War she built mobile X-ray units, learned to drive them, and trained operators, including her daughter Irène.
She died in 1934 of aplastic anaemia, almost certainly from years of radiation exposure. Her notebooks are still radioactive. In 1995 she became the first woman interred in the Panthéon on her own merits.
Papers, books and institutions
Beyond the two discoveries: what she wrote, standardised and founded.
With Pierre: the polonium paper, which first used the word “radioactive”.
With Pierre and Gustave Bémont: the announcement of radium.
Her doctoral thesis, translated into five languages within a year.
A two-volume, 1,000-page textbook for the new field.
With André Debierne, produced pure metallic radium for the first time.
Prepared the reference sample, kept at Sèvres; the “curie” unit is named after the couple.
Co-founded laboratory for radioactivity research and medical use — now the Institut Curie.
Her account of wartime X-ray work.
Her biography of her husband.
Opened in her home city, with her sister Bronisława as director.
“Nothing in life is to be feared, it is only to be understood.”
Timeline
Reading the ≈185
No formal testing and no Cox rating. The figure is a later popular estimate; her Nobel record is the evidence that actually exists.
Sources
- Nobel Prize archives (1903, 1911)
- Curie, È. (1937). Madame Curie
- Quinn, S. (1995). Marie Curie: A Life. Simon & Schuster
- Curie, M. (1904). Recherches sur les substances radioactives