Euler's Disk

Template:Redirect3 Template:No footnotes Template:Infobox scientist Arthur Amos Noyes (1866–1936) was a U.S. chemist and educator. He served as the acting president of MIT between 1907 and 1909. He received a PhD. in 1890 at Leipzig under the guidance of Wilhelm Ostwald. Roscoe Gilkey Dickinson was one of his famous students. Noyes served as Professor of Chemistry at the California Institute of Technology from 1919 to 1936. He was a major influence on the educational philosophy and the core curriculum of Caltech. He also served on the board of trustees for Science Service, now known as Society for Science & the Public, between 1921 and 1927.

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:

$\frac{dW}{dt}=\frac{DA(C_s-C)}{L}$

Where:

• $\frac{dW}{dt}$ 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.
• $C_s$ is the concentration of the solid in the diffusion layer surrounding the solid.
• D is the diffusion coefficient.
• L is the diffusion layer thickness.

References

• "Arthur Amos Noyes: Sept. 13, 1866 – June 3, 1936 (A biographical memoir)," in Biographical Memoirs, Vol. 31, Columbia University Press (For the National Academy of Sciences of the United States), New York, 1958, pp. 322–346.
• Dictionary of Scientific Biography, Charles Scribner's Sons, 1970–1990, vol. 10, pp. 156–157.
• Biog. Mem. Nat. Acad. Sci., 1958, 31, pp. 322–346.
• Proc. Welch Fdn. Conf. 1977, 20, pp. 88–105.
• Science 1936, 83, pp. 613–614.
• Science 1936, 84, pp. 217–220.
• Sci. Monthly 1936, 43, pp. 179–181.
• Ind. Eng. Chem. 1931, 23, pp. 443–445.
• American Chemists and Chemical Engineers, Ed. W.D. Miles, American Chemical Society, 1976, pp. 371–372.
• Proc. Am. Acad. Arts Sci. 1940, 74, pp. 150–155.

External links

• Noyes' Gibbs medal
• Arthur Amos Noyes – Key Participant Linus Pauling and the Nature of the Chemical Bond: A Documentary History and It's in the Blood! A Documentary History of Linus Pauling, Hemoglobin, and Sickle Cell Anemia
• Template:Biographical Memoirs

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