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Category: Chemistry

New Year Honours List

January 3rd, 2012 | by | chemistry, medicine, meta, women in science

Jan
03

Happy 2012 to everyone! The New Year Honours List has been announced and some will be starting off 2012 with new titles or new letters after their names. A number of scientists and medical researchers were honoured this year. Unsurprisingly the Science Museum’s medical collection has its fair share of sirs and dames as well as OBEs and Orders of Merit.

Artificial leg, Poland, 1940 ( Science Museum, London )

Arthur Weston made a number of artificial prostheses while imprisoned in Stalag VIIIB/344 (Lamsdorf) during the Second World War. This is just one example made from salvaged materials. Weston later became an OBE (Officer of the British Empire).

Sir James Reid's medicine chest ( Science Museum, London )

Sir James Reid (1849-1923) was personal physician to Queen Victoria. For his services he was knighted in 1895 and would also attend to the health of King Edward VII and King George V. He was also a trusted confidant and recommended that Joseph Lister become a peer.

Dr Mary Scharlieb's gown, hood, mortar board, 1888 ( Science Museum, London )

Dr Mary Scharlieb (1845-1930) was a pioneering female physician and awarded a knighthood in 1926 for her work in medicine and services to public causes. She served on the royal commission on venereal diseases from 1913 to 1916 and was one of the first female magistrates.

Dorothy Hodgkin (1910-94) was awarded the prestigious and exclusive Order of Merit in 1965 to add to her 1964 Nobel Prize for ”her determinations by X-ray techniques of the structures of important biochemical substances”. The Order of Merit is a group of 24 individuals of great achievement in the fields of the arts, learning, literature and science. Hodgkin was only the second woman to be part of the exclusive group - the first was Florence Nightingale.

Molecular model of penicillin by Dorothy M Crowfoot Hodgkin, England, 1945 ( Science Museum, London )

I wonder what 2012 holds for science and medicine and just who will be honoured in 12 months time…

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Remarkable radium

December 10th, 2011 | by | chemistry, women in science

Dec
10

100 years ago today, Marie Curie was awarded the Nobel Prize in Chemistry, becoming the first person to win two Nobel Prizes. The citation recognised ‘the discovery of the elements radium and polonium … the isolation of radium and the study of the nature and compounds of this remarkable element’.

Marie and Pierre Curie as portrayed by Imp in Vanity Fair magazine, 1904. Pierre was killed in a road accident two years later. (Science Museum)

Isolating radium from pitchblende was a laborious process, with a ton of ore yielding only a tenth of a gram of the new substance. In the early 20th century radium was a hot commodity, with the world’s small supply in demand for scientific, medical and industrial research. Curie established a Radium Institute in Paris to carry out research into radioactivity and continue production of radium and other substances.

Certificate specifying radium content, signed by Curie in 1926 (Science Museum).

Radium’s reputation as a wonder-substance led to a public craze for radium therapies. The vast array of quack cures for sale included filters to make water radioactive, radium buttons, soap, and even toothpaste.

Advert for a compress made by Radium Vita Limited which operated 1933-54 (Alison Boyle).

The dangers of radioactive substances only became widely understood later. Curie herself died in 1934 from illness related to years of exposure. You can find out more about Marie Curie in the Science Museum’s online exhibit. And if you want to know what William Crookes did with radium, come along to this talk by my colleague Jane on 15 December…

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Women of substance

March 8th, 2011 | by | chemistry, computing, women in science

Mar
08

Continuing our Women’s History Month theme, today we’re celebrating International Women’s Day. As the theme for 2011 is ‘equal access to education, training and science and technology’, it seems like a good day to celebrate Kathleen Lonsdale, who in 1945 became the first woman to be elected a Fellow of the Royal Society, along with microbiologist Marjory Stephenson (only 285 years after the men).

Kathleen Lonsdale in 1957 (Science Museum).

Lonsdale was a pioneer in the field of X-ray crystallography, in which scientists fire X-rays at crystals and study how they are scattered. This enables them to infer how atoms are arranged inside the crystal.

Lonsdale's models of the structure of ice, 1955 (Science Museum)

In the early days, it was an arduous process. Capturing X-rays on film could result in burns to the fingers. Calculating the atomic layout from the X-ray patterns had to be done manually, involving hours of slogging. Things got somewhat easier with the advent of scientific computing. The Pegasus computer on display in our Computing gallery (the world’s oldest working electronic computer) was used by Lonsdale’s group at University College London.

Pegasus speeded up crystallographers' calculations (Science Museum).

Lonsdale faced the additional challenge of being a woman in a man’s world, and for a time struggled to combine scientific work with raising a family. Her mentor William Henry Bragg arranged for a grant to help support her at home so that she could carry out her world-class research. Lonsdale said that to succeed as a woman scientist one must be a first-class organiser, work twice the usual hours, and learn to concentrate in any available moment of time.

In the early-to-mid 20th century, the field of X-ray crystallography was unusual in having a number of high-profile women scientists, including Lonsdale, Helen Megaw, Rosalind Franklin, whose X-ray photograph of DNA was infamously used by Crick and Watson in determining the double helix structure, and Nobel prizewinner Dorothy Hodgkin. Hodgkin always resisted being singled out as a ‘woman scientist’, but cannot have been impressed with the Daily Mail’s headline announcing her award: ‘Oxford housewife wins Nobel Prize’.

Dorothy Hodgkin in the 1940s (NMeM / Daily Herald Archive / Science & Society)

Things are easier for women in the sciences today but a 2010 report suggests that, in the UK at least, the picture’s still not so rosy – despite an increase in females studying science, technology and medicine, women still only make up 12% of the workforce. And women are noticeably absent as the famous faces of science. There’s still some way to go before the likes of Lonsdale become the norm rather than the inspirational exceptions.

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Women in History month

March 4th, 2011 | by | chemistry, events, women in science

Mar
04

March is National Women’s History Month. To coincide with the centenary of the Nobel Prizes, it seems an ideal time to look at the achievements of Marie Curie (1897-1934).

Marie and Pierre Curie with their daughter, Iréne (© Science Museum / Science & Society )

Marie Curie was the first scientist to win two Nobel Prizes - one in 1903 with her husband Pierre and the another in 1911 for Chemistry for her work on radioactivity.

Glass flask used by Marie Curie ( © Science Museum / Science & Society )

Like many of the objects Marie Curie used in her work, this flask has slight traces of radioactivity and needs to be stored and handled carefully.

Certificate signed by Marie Curie, 1926 ( © Science Museum / Science & Society )

This certificate specifies radium content signed by Marie Curie in her role as director of the Institute de Radium. Radium became used for cancer treatments and you can read about the ‘radium bomb’ courtesy of my colleague Katie.

Marie Curie also provided radioactive samples to other researchers including Sir William Crookes. Crookes invented a device for visualising radium and its decay – a spinthariscope using the radium Marie Curie provided.

Crookes' experimental spinthariscopes, c. 1902 (© Science Museum / Science & Society )

And it didn’t end there. Marie Curie’s daughter Iréne Joliot-Curie (1897-1956) followed in her mother’s footsteps. Iréne worked with her husband Frédéric Joliot (1900-1958) on producing artificial radioactivity.

Glass tube used in the discovery of artificial radioactivity (© Science Museum / Science & Society )

The second generation husband and wife team won a Nobel Prize for Chemistry in 1935 for their discovery.

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What was Watt up to in the vegetable patch?

January 6th, 2011 | by | art, chemistry, james watt

Jan
06

How many uses can you think of for red cabbage? Not as many as James Watt I’ll bet…

His friend William Nicholson wrote a Dictionary of Chemistry in 1795. The entry for red cabbage reads:

BRASSICA RUBRA – Mr Watt finds that red cabbage affords a very excellent test, both for acids and alkalis; in which it is superior to litmus, being naturally blue, turning green with alkalis, and red with acids.

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Red cabbage used in chemistry [Science Museum / Science & Society

The description of how he prepared the cabbage leaves includes boiling them for several hours. No wonder Mrs Watt banished his workshop activities to the top of the house.

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Mrs Annie Watt, James's second wife [Science Museum / Science & Society

Watt’s home at Heathfield near Birmingham was surrounded by gardens and parkland, so there was plenty of space for him to try out his ideas without disturbing the neighbours.

He made the most of the flower gardens, as Nicholson also remarks that he then checked out violets, scarlet roses and pink coloured lychnis for similar reasons.

He wasn’t the only one. Robert Boyle had investigated the use of similar colour changes for acid-alkali reactions in the 17th century. Watt’s chemical interests were both philosophical, and intensely practical – he tried a number of ways of turning science into money, including bleaching, dyeing, and making ink.

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