During World War II, poor eyesight made Trefethen ineligible for the Navy, so instead he signed up for the United States Merchant Marine. There he met Florence Newman, a Navy codebreaker who later became a professor of English at Tufts.[2] They married in 1944.[1] Their son Lloyd N. Trefethen later became a notable mathematician;[3] they also had an older daughter, quilter Gwyned Trefethen.[4]
In 1950, Trefethen completed a Ph.D. at the University of Cambridge.[1] Although his initial plan of research was on cooling turbine blades, his eventual dissertation was Heat Transfer Properties of Liquid Metals, and his work sparked an ongoing interest in magnetohydrodynamics at Cambridge.[5]
Career and later lifeedit
On returning to the US, Trefethen took a managerial position at the National Science Foundation before joining Harvard University as an assistant professor of engineering in 1954. He moved to Tufts University in 1958, where he became a full professor and the chair of the mechanical engineering department. He retired in 1989.[1]
Trefethen was known for his research on surface tension in liquid droplets, and he became one of the independent inventors of the heat pipe. In 1963 he produced an award-winning educational film, Surface Tension in Fluid Mechanics, for Encyclopædia Britannica Films.[1] Trefethen's contributions to fluid mechanics also included widely reported experiments on the folklore claims that the Coriolis force can cause the vortex in a drain to rotate in opposite directions in the northern and southern hemispheres.[1][A]
Beyond fluid dynamics, Trefethen's publications include a paper with his son Lloyd N. Trefethen on the Gilbert–Shannon–Reeds model, a mathematical model of shuffling playing cards. In contrast to earlier research suggesting that seven riffles are needed to remove any patterns from an unshuffled deck of cards, Trefethen and Trefethen showed that, in their model of the problem, five riffles are enough.[7][8][B]
Recognitionedit
Trefethen was a Fellow of the ASME. In 1999, a special issue of the Journal of Fluids Engineering was dedicated to Trefethen to honor his 80th birthday.[1]
Selected publicationsedit
A.
Trefethen, Lloyd M.; Bilger, R. W.; Fink, P. T.; Luxton, R. E.; Tanner, R. I. (September 1965), "The bath-tub vortex in the Southern Hemisphere", Nature, 207 (5001): 1084–1085, Bibcode:1965Natur.207.1084T, doi:10.1038/2071084a0, S2CID 4249876
B.
Trefethen, L. N.; Trefethen, L. M. (2000), "How many shuffles to randomize a deck of cards?", Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 456 (2002): 2561–2568, Bibcode:2000RSPSA.456.2561T, doi:10.1098/rspa.2000.0625, MR 1796496, S2CID 14055379
Referencesedit
^ abcdefghAstill, Ken; Nelson, Fred; Humphrey, Joseph A. C. (1999), "Dedication to Lloyd MacGregor Trefethen on the Occasion of His 80th Birthday", Journal of Fluids Engineering, 121 (1): 3, doi:10.1115/1.2822008
^Gittleman, Sol (November 11, 2013), "The Quiet Men: Sol Gittleman, the university's former provost, remembers Tufts' postwar veteran-professors, the unsung heroes of academia", Tufts Now
^"Trefethen, Prof. Lloyd Nicholas, (Nick)", Who's Who 2019, Oxford University Press, 2019, doi:10.1093/ww/9780199540884.013.U37988
^"Trefethen", The Annual Review of Girton College, 2012, 2013, p. 97
^Cowley, Martin (2007), "Early years of MHD at Cambridge University Engineering Department", Fluid Mechanics And Its Applications, vol. 80, Springer, pp. 131–154, doi:10.1007/978-1-4020-4833-3_8, ISBN978-1-4020-4832-6
^"Lloyd MacGregor Trefethen", Boston Globe – via Legacy.com
^Ball, Philip (October 2000), "Shuffling: what's the deal?", Nature, doi:10.1038/news001005-8
^Uhlig, Robert (October 12, 2000), "Five shuffles enough for random pack of cards, say scientists", The Telegraph
April 18, 2024
lloyd, trefethen, confused, with, lloyd, trefethen, lloyd, macgregor, trefethen, march, 1919, november, 2001, american, expert, fluid, dynamics, known, invention, heat, pipe, research, coriolis, effect, card, shuffling, worked, many, years, professor, mechanic. Not to be confused with Lloyd N Trefethen Lloyd MacGregor Trefethen March 15 1919 November 6 2001 was an American expert in fluid dynamics known for his invention of the heat pipe and his research on the Coriolis effect and card shuffling He worked for many years as a professor of mechanical engineering at Tufts University Contents 1 Early life and education 2 Career and later life 3 Contributions 4 Recognition 5 Selected publications 6 ReferencesEarly life and education editTrefethen was born on March 15 1919 in Waltham Massachusetts 1 He graduated from the Webb Institute in 1940 and went to the Massachusetts Institute of Technology for a master s degree in naval engineering 1 During World War II poor eyesight made Trefethen ineligible for the Navy so instead he signed up for the United States Merchant Marine There he met Florence Newman a Navy codebreaker who later became a professor of English at Tufts 2 They married in 1944 1 Their son Lloyd N Trefethen later became a notable mathematician 3 they also had an older daughter quilter Gwyned Trefethen 4 In 1950 Trefethen completed a Ph D at the University of Cambridge 1 Although his initial plan of research was on cooling turbine blades his eventual dissertation was Heat Transfer Properties of Liquid Metals and his work sparked an ongoing interest in magnetohydrodynamics at Cambridge 5 Career and later life editOn returning to the US Trefethen took a managerial position at the National Science Foundation before joining Harvard University as an assistant professor of engineering in 1954 He moved to Tufts University in 1958 where he became a full professor and the chair of the mechanical engineering department He retired in 1989 1 Trefethen died on November 6 2001 6 Contributions editTrefethen was known for his research on surface tension in liquid droplets and he became one of the independent inventors of the heat pipe In 1963 he produced an award winning educational film Surface Tension in Fluid Mechanics for Encyclopaedia Britannica Films 1 Trefethen s contributions to fluid mechanics also included widely reported experiments on the folklore claims that the Coriolis force can cause the vortex in a drain to rotate in opposite directions in the northern and southern hemispheres 1 A Beyond fluid dynamics Trefethen s publications include a paper with his son Lloyd N Trefethen on the Gilbert Shannon Reeds model a mathematical model of shuffling playing cards In contrast to earlier research suggesting that seven riffles are needed to remove any patterns from an unshuffled deck of cards Trefethen and Trefethen showed that in their model of the problem five riffles are enough 7 8 B Recognition editTrefethen was a Fellow of the ASME In 1999 a special issue of the Journal of Fluids Engineering was dedicated to Trefethen to honor his 80th birthday 1 Selected publications editA Trefethen Lloyd M Bilger R W Fink P T Luxton R E Tanner R I September 1965 The bath tub vortex in the Southern Hemisphere Nature 207 5001 1084 1085 Bibcode 1965Natur 207 1084T doi 10 1038 2071084a0 S2CID 4249876B Trefethen L N Trefethen L M 2000 How many shuffles to randomize a deck of cards Proceedings of the Royal Society of London Series A Mathematical Physical and Engineering Sciences 456 2002 2561 2568 Bibcode 2000RSPSA 456 2561T doi 10 1098 rspa 2000 0625 MR 1796496 S2CID 14055379References edit a b c d e f g h Astill Ken Nelson Fred Humphrey Joseph A C 1999 Dedication to Lloyd MacGregor Trefethen on the Occasion of His 80th Birthday Journal of Fluids Engineering 121 1 3 doi 10 1115 1 2822008 Gittleman Sol November 11 2013 The Quiet Men Sol Gittleman the university s former provost remembers Tufts postwar veteran professors the unsung heroes of academia Tufts Now Trefethen Prof Lloyd Nicholas Nick Who s Who 2019 Oxford University Press 2019 doi 10 1093 ww 9780199540884 013 U37988 Trefethen The Annual Review of Girton College 2012 2013 p 97 Cowley Martin 2007 Early years of MHD at Cambridge University Engineering Department Fluid Mechanics And Its Applications vol 80 Springer pp 131 154 doi 10 1007 978 1 4020 4833 3 8 ISBN 978 1 4020 4832 6 Lloyd MacGregor Trefethen Boston Globe via Legacy com Ball Philip October 2000 Shuffling what s the deal Nature doi 10 1038 news001005 8 Uhlig Robert October 12 2000 Five shuffles enough for random pack of cards say scientists The Telegraph Retrieved from https en wikipedia org w index php title Lloyd M Trefethen amp oldid 1158957268, wikipedia, wiki, book, books, library,
