Lonsdale in 1948
Born Kathleen Yardley
28 January 1903
Newbridge, County Kildare, Ireland
Died 1 April 1971(aged 68)
Fields Crystallographer Institutions University College London
University of Leeds
Alma mater Bedford College for Women
University College London
Doctoral advisor William Henry Bragg Known for X-ray crystallography Notable awards Davy Medal (1957)
Dame Kathleen Lonsdale, DBE FRS (née Yardley) (28 January 1903 - 1 April 1971) was a crystallographer, who established the structure of benzene by X-ray diffraction methods in 1929, and hexachlorobenzene by Fourier spectral methods in 1931. During her career she attained a number of firsts for a female scientist including first woman elected a Fellow of the Royal Society, first woman tenured professor at University College London, first woman president of the International Union of Crystallography, and first woman president of the British Association for the Advancement of Science.
Lonsdale was born at Newbridge, County Kildare, Ireland, the tenth child of Harry Yardley, the town postmaster, and Jessie Cameron. Her family moved to England when she was five. She studied at Woodford County High School for Girls, then moved to Ilford County High School for Boys to study mathematics and science because the girls' school did not offer these subjects.
She earned her B.Sc. from Bedford College for Women in 1922, graduating in physics with an M.Sc. from University College London in 1924. She then joined the crystallography research team headed by William Henry Bragg at the Royal Institution. In 1927 she married Thomas Jackson Lonsdale. They had three children – Jane, Nancy, and Stephen - the latter of whom became a medical doctor and worked for several years in Malawi.
Though she had been brought up in the Baptist religion as a child, Kathleen Lonsdale became a Quaker in 1935, simultaneously with her husband. Both of them were committed pacifists and were attracted to Quakerism in no small part for this reason. She served a month in Holloway prison during the Second World War because she refused to register for civil defence duties or pay a fine for refusing to register. At the annual meeting of the British Quakers in 1953 she delivered the keynote Swarthmore Lecture, under the title Removing the Causes of War.
Lonsdale worked at the University of Leeds in the late 1920s, was mostly a full-time mother of small children during the early 1930s, and returned to work with Bragg at the Royal Institution as a researcher in 1934. She was awarded a D.Sc. from University College London in 1936 while at the Royal Institution. In addition to discovering the structure of benzene and hexachlorobenzene, Lonsdale worked on the synthesis of diamonds. She was a pioneer in the use of X-rays to study crystals. Lonsdale became one of the first two female Fellows of the Royal Society in 1945 (the other was the biochemist Marjory Stephenson).
In 1949, Lonsdale became a professor of chemistry and the head of the Department of Crystallography at University College, London. She was the first woman professor at that college, a position she held until 1968 when she was named Professor Emeritus.
She was given the title Dame Commander of the Order of the British Empire in 1956. Lonsdale became the first woman president of the International Union of Crystallography in 1966. Lonsdale was active in encouraging young people to study science and was the first woman president of the British Association for the Advancement of Science in 1967.
A Kathleen Lonsdale Building is named in her honor today at both University College London, UK and University of Limerick, Ireland.
She died on 1 April 1971 from leukaemia.
- "The Structure of the Benzene Ring in Hexamethylbenzene," Proceedings of the Royal Society 123A: 494 (1929).
- "An X-Ray Analysis of the Structure of Hexachlorobenzene, Using the Fourier Method," Proceedings of the Royal Society 133A: 536 (1931).
- Simplified Structure Factor and Electron Density Formulae for the 230 Space Groups of Mathematical Crystallography, G. Bell & Sons, London, 1936.
- "Diamonds, Natural and Artificial," Nature 153: 669 (1944).
- "Divergent Beam X-ray Photography of Crystals," Philosophical Transactions of the Royal Society 240A: 219 (1947).
- Crystals and X-Rays, G. Bell & Sons, London, 1948.
- Removing the Causes of War, 1953.
- Dorothy M. C. Hodgkin: Kathleen Lonsdale Biogr. Mems Fell. R. Soc. 1975 21, 447-484. The author of this biography was also a crystallographer and a Nobel laureate. 
- The entry for Kathleen Lonsdale in Encyclopedia of World Biography (published by Thomson Gale Group) is well done and available in full at  (or ) and contains further references.
- The biography of Kathleen Lonsdale at the website of the Royal Society of Chemistry (UK) is good in itself and contains a list of further references: See .
- A short biography derived from the Dictionary of Scientific Biography, and including some quotations from Lonsdale about her career, is available at .
- An overview of the scope and content of the collection of Lonsdale's papers that are kept at University College London is presented at .
- A short biography distinguished from the others by having a good photograph is at .
- Archival material relating to Kathleen Lonsdale listed at the UK National Register of Archives
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Kathleen Lonsdale — Dame Kathleen Lonsdale (* 28. Januar 1903 in Newbridge, Kildare, Irland; † 1. April 1971 in London) war eine Kristallografin, welche die planar hexagonale Struktur des Benzols entdeckt hat. Inhaltsverzeichnis 1 Leben und Werk 2 … Deutsch Wikipedia
Dame Kathleen Lonsdale — (* 28. Januar 1903 in Newbridge, Kildare, Irland; † 1. April 1971) war eine Kristallografin, welche die planar hexagonale Struktur des Benzols entdeckt hat. Leben und Werk Lonsdale wurde geboren als Kathleen Yardley im irischen Newbridge. Sie… … Deutsch Wikipedia
Lonsdale (Begriffsklärung) — Lonsdale ist der Name eines englischen Sport und Freizeitkleidungsherstellers, siehe Lonsdale (Unternehmen) Point Lonsdale, eine australische Ortschaft im Queenscliffe Borough ein Zigarrenformat mit Ringmaß 42 (Durchmesser 17 mm, Länge 160 mm)… … Deutsch Wikipedia
Lonsdale — can refer to:People*Angela Lonsdale *Bruce Lonsdale *Corrine Lonsdale *David Lonsdale *Derrick Lonsdale *Earl of Lonsdale *Edmund Lonsdale *Frederick Lonsdale *Gordon Arnold Lonsdale *Gordon Lonsdale *Harvey Lonsdale Elmes *Hugh Lowther, 5th Earl … Wikipedia
Lonsdale — ist der Name eines englischen Sport und Freizeitkleidungsherstellers, siehe Lonsdale (Unternehmen) der Name einer ehemaligen britischen Automarke, siehe Lonsdale (Automarke) ein Zigarrenformat mit Ringmaß 42 (Durchmesser 17 mm, Länge… … Deutsch Wikipedia
Kathleen (given name) — Infobox Given Name Revised name = Kathleen imagesize= caption= pronunciation= gender = Female meaning = Pure region = origin = English related names = footnotes = Kathleen is a female given name, used in English and Irish language communities.… … Wikipedia
Lonsdale — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Lonsdale peut désigner : Patronyme Kathleen Lonsdale (1903 1971), spécialiste britannique de la cristallographie ; Michael Lonsdale (né en 1931) … Wikipédia en Français
Lonsdale , Dame Kathleen — (1903–1971) British crystallographer The daughter of a postman, Lonsdale (née Yardley) was born at Newbridge in Ireland and moved to England with her family in 1908. She studied physics at Bedford College, London, graduating in 1922, and spent… … Scientists
Kathleen — /kath leen , kath leen/, n. a female given name, form of Katherine. Also, Kathlene, Kathlyn, Kathlynne /kath lin/. * * * (as used in expressions) Lonsdale Dame Kathleen Kathleen Yardley Kathleen Mansfield Beauchamp Rowling Joanne Kathleen * * * … Universalium
Kathleen — (as used in expressions) Lonsdale, Dame Kathleen Kathleen Yardley Kathleen Mansfield Beauchamp Rowling, J(oanne) K(athleen) … Enciclopedia Universal