The elusive chemical potential
This paper offers some qualitative understanding of the chemical potential, a topic that students invariably find difficult. Three "meanings" for the chemical potential are stated and then s...
This paper offers some qualitative understanding of the chemical potential, a topic that students invariably find difficult. Three "meanings" for the chemical potential are stated and then s...
The van der Waals interaction
The interaction between two neutral but polarizable systems at separation R, usually called the van der Waals force, is discussed from different points of view. The change in character from 1/R6 to 1/...
The interaction between two neutral but polarizable systems at separation R, usually called the van der Waals force, is discussed from different points of view. The change in character from 1/R6 to 1/...
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The charge distribution on a conductor for non-Coulombic potentials
American Journal of Physics -- April 2001 -- Volume 69, Issue 4, pp. 435-440
Issue Date: April 2001
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We study the distribution of charge on a conductor for Yukawa (e–µr/r) and power-law (1/rn) potentials. In the Yukawa case some charge goes to the surface, while the remainder distributes uniformly over the volume. In the power-law case no such general result is available, but we obtain the distribution for spheres, cylinders, and slabs, on the range 1
n3. In the Coulomb limit (n = 1) the charge all goes to the surface; at the other extreme (n = 3) it distributes uniformly over the volume. ©2001 American Association of Physics Teachers.
n3. In the Coulomb limit (n = 1) the charge all goes to the surface; at the other extreme (n = 3) it distributes uniformly over the volume. ©2001 American Association of Physics Teachers.
| History: | Received 11 July 2000; accepted 31 October 2000 |
| Permalink: | http://dx.doi.org/10.1119/1.1339279 |