David John Acheson (born 1946) is a British applied mathematician at Jesus College, Oxford. He was educated at

Highgate School Highgate School, formally Sir Roger Cholmeley's School at Highgate, is an English co-educational, fee-charging, independent day school, founded in 1565 in Highgate, London, England. It educates over 1,400 pupils in three sections – Highgate ...

King's College London King's College London (informally King's or KCL) is a public research university located in London, England. King's was established by royal charter in 1829 under the patronage of King George IV and the Duke of Wellington. In 1836, King's ...

(BSc Mathematics and Physics, 1967) and the University of East Anglia (PhD, 1971). He was appointed a Fellow in Mathematics at Jesus College, Oxford in 1977 and became an Emeritus Fellow in 2008. He served as president of the Mathematical Association from 2010 to 2011. He was awarded an Honorary Doctorate of Science from the University of East Anglia in 2013. His early research was on geophysical and astrophysical fluid dynamics, beginning with the discovery in 1972 of a magnetic 'field gradient' instability in rotating fluids. In 1976, he discovered the first examples of wave over-reflection (i.e. reflection coefficient greater than unity) in a stable system. In 1978 his research focused on magnetic fields and differential rotation in stars, with new results on magnetic buoyancy, the Taylor instability, Goldreich-Schubert instability, and

magnetorotational instability The magnetorotational instability (MRI) is a fluid instability that causes an accretion disk orbiting a massive central object to become turbulent. It arises when the angular velocity of a conducting fluid in a magnetic field decreases as the di ...

. In 1992 he discovered the 'upside-down pendulums theorem' (which is very loosely connected with the Indian Rope Trick).

Books

* ''Elementary Fluid Dynamics'' (1990) * ''From Calculus to Chaos'' (1997) * ''1089 and All That'' (2002) * ''The Calculus Story: A Mathematical Adventure'' (2017) * ''The Wonder Book of Geometry: A Mathematical Story'' (2020) * ''The Spirit of Mathematics: Algebra and All That'' (2023)

References

1946 births Living people People educated at Highgate School Alumni of King's College London Alumni of the University of East Anglia Fellows of Jesus College, Oxford Place of birth missing (living people) 20th-century British mathematicians 21st-century British mathematicians Mathematics writers Fluid dynamicists British non-fiction writers 20th-century British writers 21st-century British writers 20th-century British male writers Male non-fiction writers {{UK-mathematician-stub