Arthur Amos Noyes
From Freepedia
Arthur Amos Noyes (1866 – 1936) was a U.S. chemist and educator. He served as the acting president of MIT between 1907 and 1909.
Noyes-Whitney Equation
Along with Willis Rodney Whitney, he formulated the Noyes-Whitney equation in 1897, which relates the rate of dissolution of solids to the properties of the solid and the dissolution medium. It is an important equation in pharmaceutical science. The relation is given by:
- <math>\frac{dW}{dt} = \frac{DA(C_{s}-C)}{L}</math>
Where:
- <math>\frac{dW}{dt}</math> is the rate of dissolution.
- A is the surface area of the solid.
- C is the concentration of the solid in the bulk dissolution medium.
- <math>C_{s}</math> is the concentration of the solid in the diffusion layer surrounding the solid.
- D is the diffusion coefficient.
- L is the diffusion layer thickness.
| Image:MIT.gif Presidents of the Massachusetts Institute of Technology |
| William Barton Rogers (1862–1870, 1879–1881) | John Daniel Runkle (1870–1878) | Francis Amasa Walker (1881–1897) | James Crafts (1897–1900) | Henry Smith Pritchett (1900–1907) | Arthur Amos Noyes (acting 1907–1909) | Richard Cockburn Maclaurin (1909–1920) | Elihu Thomson (acting 1920–1921, 1922–1923) | Ernest Fox Nichols (1921–1922) | Samuel Wesley Stratton (1923–1930) | Karl Taylor Compton (1930–1948) | James Rhyne Killian (1948–1959) | Julius Adams Stratton (1959–1966) | Howard Wesley Johnson (1966–1971) | Jerome Wiesner (1971–1980) | Paul Edward Gray (1980–1990) | Charles Marstiller Vest (1990–2004) | Susan Hockfield (2004—) |
Categories: Chemist stubs | Massachusetts Institute of Technology | 1866 births | 1936 deaths | American chemists
