Jean-Marie Constant Duhamel | |
---|---|
![]() | |
Born | Saint-Malo, Ille-et-Vilaine, France | 5 February 1797
Died | 29 April 1872 Paris, France | (aged 75)
Known for | Duhamel's formula Duhamel's integral Duhamel's principle Vibroscope |
Scientific career | |
Fields | Mathematics Physics |
Jean-Marie Constant Duhamel (/ˌdjuːəˈmɛl/;[1] French: [dy.amɛl]; 5 February 1797 – 29 April 1872) was a French mathematician and physicist.
His studies were affected by the troubles of the Napoleonic era. He went on to form his own school École Sainte-Barbe. Duhamel's principle, a method of obtaining solutions to inhomogeneous linear evolution equations, is named after him. He was primarily a mathematician but did studies on the mathematics of heat, mechanics, and acoustics.[2] He also did work in calculus using infinitesimals. Duhamel's theorem for infinitesimals says that the sum of a series of infinitesimals is unchanged by replacing the infinitesimal with its principal part.[3]
In 1853 he published about an early recording device he called a vibroscope. Like other similar devices, the vibroscope was a type of measuring device similar to an oscilloscope, and could not play back the etchings it recorded.[4]
Honours
[edit]- 19617 Duhamel, asteroid named after him
See also
[edit]References
[edit]- ^ "Duhamel". Random House Webster's Unabridged Dictionary.
- ^ John J O'Connor and Edmund F Robertson. The MacTutor History of Mathematics archive
- ^ H. J. Ettlinger (1922) "A Simple Form of Duhamel's Theorem and Some New Applications", American Mathematical Monthly 29(7): 239–50
- ^ Burgess, Richard James (2014). The History of Music Production. Oxford University Press. p. 3. ISBN 978-0199357178. Retrieved 1 August 2019.