Grace Langford (June 27, 1871 – December 4, 1957) was an American physicist known for her work in physics education and research on the infrared reflection of phosphates. She taught at Wellesley College and at Barnard College.

Early life and education

Langford was born in Plymouth, Massachusetts, the seventh and youngest child of John Langford and Celestina Eldridge Langford. She graduated from Plymouth High School in 1889.[1] She attended Wellesley College, where she was an instructor and undergraduate student simultaneously, and the Massachusetts Institute of Technology, where she earned her B.S. in physics in 1900,[2] as the only woman in her graduating class.[3] Her senior thesis was titled "An Investigation of the Effect of Dilution on the Color of Copper Solution and its Relation to the Dissociation Theory."[2]

From 1894 to 1905, Langford taught physics at Wellesley.[4] In 1905, she began research at Barnard College, where she also taught.[5][6] She briefly returned to Wellesley to teach in 1908,[7] then remained at Barnard for several years.[8][9] She published her research in Physical Review.[10] She also reported on the activities of the Faculty Science Club of Wellesley College in the journal Science.[11]
Selected publications

"The Selective Reflection of Ortho-, Meta- and Pyro-Phosphates in the Infra-Red Spectrum" (1911)[10]

Personal life

Langford died in Plymouth, Massachusetts in 1957, aged 86 years.

"Untitled brief item". Boston Evening Transcript. June 28, 1889. p. 3. Retrieved October 15, 2021 – via
"Pres. Crafts's Farewell". Boston Evening Transcript. June 5, 1900. p. 5. Retrieved October 15, 2021 – via
"Times have changed since graduation of last century class". MIT News | Massachusetts Institute of Technology. May 31, 2000. Retrieved October 15, 2021.
"Wellesley College". Boston Evening Transcript. October 14, 1905. p. 21. Retrieved October 15, 2021 – via
Ogilvie, Marilyn; Harvey, Joy (2000). The biographical dictionary of women in science. New York [u.a.]: Routledge. ISBN 0-415-92038-8.
Rayner-Canham, Marelene F.; Rayner-Canham, Geoffrey W. (February 7, 1992). Harriet Brooks: Pioneer Nuclear Scientist. McGill-Queen's Press - MQUP. p. 49. ISBN 978-0-7735-6318-6.
"Changes of Teachers at Barnard". Boston Evening Transcript. June 3, 1908. p. 5. Retrieved October 15, 2021 – via
"Many Changes at Barnard". The New York Times. October 6, 1908. p. 9. Retrieved October 15, 2021 – via
Barnard College, Mortarboard (1914 yearbook): 31.
Langford, Grace (August 1, 1911). "The Selective Reflection of Ortho-, Meta- and Pyro-Phosphates in the Infra-Red Spectrum". Physical Review. Series I. 33 (2): 137–151. Bibcode:1911PhRvI..33..137L. doi:10.1103/PhysRevSeriesI.33.137.
"Societies and Academies". Science. 19 (478): 339. 1904. ISSN 0036-8075. JSTOR 1631111.

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