Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Potential theory


Related Topics

In the News (Wed 11 Nov 09)

  
  PlanetMath: potential theory
Potential theory may be defined as the study of harmonic functions.
The term “potential theory” arises from the fact that, in 19th century physics, the fundamental forces of nature were believed to be derived from potentials which satisfied Laplace's equation.
This means that the fundamental object of study in potential theory is a linear space of functions.
planetmath.org /encyclopedia/PotentialTheory.html   (0 words)

  
 Springer Online Reference Works
Potentials, method of) can be applied not only to solve problems in the theory of gravitation but, in general, to solve a wide range of problems in mathematical physics, in particular in electrostatics and magnetism.
In the first half of the 20th century, a great stimulus for the generalization of the principal problems and the completion of the existing formulations in potential theory was made on the basis of the general notions of a Radon measure, a capacity and generalized functions.
Together with further profound studies of classical boundary value problems and inverse problems (see Potential theory, inverse problems in) the modern period in the development of potential theory is characterized by the application of methods and notions of topology and functional analysis, and the use of abstract axiomatic methods (see Potential theory, abstract).
eom.springer.de /p/p074140.htm   (0 words)

  
 WP4 Dewpoint Water Potential Meter: Theory
The total water potential of a sample is the sum of four component potentials: gravitational, matric, osmotic, and pressure.
The WP4 measures water potential by equilibrating the liquid phase water of the sample with the vapor phase water in the headspace of a closed chamber, then measuring the vapor pressure of that headspace.
When the water potential of the sample and the headspace air are in equilibrium, the measurement of the headspace vapor pressure and sample temperature (from which saturation vapor pressure is calculated) gives the water potential of the sample.
www.decagon.com /wp4/wptheory.html   (606 words)

  
 31: Potential theory
Potential theory may be viewed as the mathematical treatment of the potential-energy functions used in physics to study gravitation and electromagnetism.
(Actually potential theory in the plane is rather different from in higher dimensions, since the fundamental solution of the Laplace equation, corresponding to a single point charge, is 1/r^(n-2) in n-dimensional space, but log(r) in the plane.
The process of determining the potential at points on the interior of a region when the potential on the boundary is known involves integrating on the boundary using a weighting function derived from Green's functions.
www.math.niu.edu /~rusin/known-math/index/31-XX.html   (0 words)

  
 Diffusion Theory & Instructional Technology
According to this theory, potential adopters of an innovation must learn about the innovation, be persuaded as to the merits of the innovation, decide to adopt, implement the innovation, and confirm (reaffirm or reject) the decision to adopt the innovaàion.
Theories in this category are not concerned with large scale, systemic change, but focus on the adoption of a specific innovation by a specific set of potential adopters.
Potential adopters are viewed as being predisposed to adopt innovations that are quantifiably superior.
www.gsu.edu /~wwwitr/docs/diffusion/index.html   (4387 words)

  
 The Math Forum - Math Library - Potential Theory
Potential Theory - Dave Rusin; The Mathematical Atlas
A short article designed to provide an introduction to potential theory, the mathematical treatment of the potential-energy functions used in physics to study gravitation and electromagnetism.
The Math Forum is a research and educational enterprise of the Drexel School of Education.
mathforum.org /library/topics/potential_theory   (180 words)

  
 zeta potential measurement ?
The potential distribution itself determines the interaction energy between the particles, and this is in many cases responsible for the stability of particles towards coagulation and for many aspects of the flow behaviour of the colloidal suspension.
There are many situations in which the zeta potential is used as a parameter in its own right characterizing the outer, diffuse part of the double layer and hence valuable for discussing the interaction between particles or the flow of liquid through membrane pores or porous plugs.
It is related to the driving pressure and to the potential in the neighborhood of the wall.
www.cad-inst.com /zeta_potential_streaming.htm   (0 words)

  
 theory.isthereason
It has certainly helped that the classes I taught in Singapore were oriented around mass media theory and Internet culture, so students could literally create or re-purpose existing media with their own critical opinions for course assignments.
There was a strong purpose to blogging as instituted by instructors like me, and knowing that not just me, but fellow students and the general public could be watching, blogs offered a perfect panopticon for maintaining good work.
Researchers like Susan explore factors in the propagation of “selfish memes” that may be passed virally from human to human based on genuine utility or through trickery.
theory.isthereason.com   (0 words)

  
 Zeta Potential Theory
Zeta Potential is the electrical potential that exists at the "shear plane" of a particle, which is some small distance from its surface.
Zeta Potential is derived from measuring the mobility distribution of a dispersion of charged particles as they are subjected to an electric field.
Mobility is defined as the velocity of a particle per electric field unit and is measured by applying an electric field to the dispersion of particles and measuring their average velocity.
www.pssnicomp.com /zetatheory.htm   (399 words)

  
 Tesla's Wave Theory
In the theory of the scalar electrostatic potential (SEP), the idea is introduced of work accomplished on a charge brought in from a distance against the scalar field.
Potential theory was largely developed in the 1800's before the theory of relativity.
Scalar potential waves can thus augment or diminish, or create or destroy, ordinary EM waves at a distance by pair-coupling interference under appropriate conditions, and this is in consonance with the implications of Whittaker's fundamental 1903 work.
www.pseudo-blue.com /FreeEnergy/TeslaWaveTheory.html   (5909 words)

  
 [No title]
Then all EM potentials, fields, and waves are shown (i) to be sets of ongoing EM energy flows in the form of longitudinal EM waves comprising the basis scalar potential(s), and (ii) to be comprised of internal longitudinal EM waves and strong internal structuring.
The Debye potentials and the Bromwich potentials are essentially radial components of the vector potentials of which Whittaker potentials are the real parts.
So in general the particular integral (i.e., the stream potentials) of the inhomogeneous Maxwell equations may be chosen such that the complementary function can be expressed in terms of only two scalars, which are components of the vector superpotentials.
www.cheniere.org /references/superpotential.htm   (600 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: )
In physics, a potential may refer to the scalar potential or to the vector potential.
Leading examples are the gravitational potential and the electric potential, from which the motion of gravitating or electrically charged bodies may be obtained.
The mathematical study of potentials is known as potential theory; it is the study of harmonic functions on manifolds.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=potential   (289 words)

  
 Potential_Theory.html
Whatever geometrical arrangement of the potentials that the fundamental charged particle might have we can also give to our composite particle of n-1 null potential lines so that we obtain a structure (electromagnetotoroid) which has layers of closed equipotential surfaces of increasing curvature (just like we assume charged particles have).
Such a geometry where the potentials and their conjugates are mapped to a ring produces a structure which has layers of closed equipotential surfaces of increasing curvature (just as we assume charged particles have).
In fact we see that the charge of a particle is composed of a finite number of velocity potentials and therefore is not continuously differentiable in the sense that a surface or solid volume is continuously differentiable.
www.singtech.com /pages/Potential_Theory.html   (1686 words)

  
 Potential Theory   (Site not responding. Last check: )
We know, from the theory of complex variables, that in a region where a function of the complex variable z = x + iy is analytic, the derivative with respect to z is the same in any direction.
Thus, analytic function of a complex variable is a solution to Laplace's equation and may be used as part of a more general solution.
It consists of the usual velocity potential as the real part and the stream function as its imaginary part.
www.desktopaero.com /appliedaero/potential/potentialtheory.html   (279 words)

  
 Lucian Beznea
Potential theory, with both analytic and probabilistic aspects.
Absorbent, parabolic, elliptic and quasielliptic balayages in potential theory; II.
Absorbent, parabolic, elliptic and quasielliptic balayages in potential theory; relationships with the Green function.
www.imar.ro /~beznea   (357 words)

  
 Potential Theory in Gravity and Magnetic Applications - Cambridge University Press
This text bridges the gap between the classic texts on potential theory and modern books on applied geophysics.
It opens with an introduction to potential theory, emphasising those aspects particularly important to earth scientists, such as Laplace’s equation, Newtonian potential, magnetic and electrostatic fields, and conduction of heat.
The theory is then applied to the interpretation of gravity and magnetic anomalies, drawing on examples from modern geophysical literature.
www.cambridge.org /catalogue/catalogue.asp?isbn=0521575478   (190 words)

  
 Amazon.ca: Function Spaces and Potential Theory: Books: David R. Adams,Lars I. Hedberg   (Site not responding. Last check: )
The subject of this book is the interplay between function space theory and potential theory.
A crucial step in classical potential theory is the identification of the potential energy of a charge with the square of a Hilbert space norm.
More recently, a generalized potential theory has been developed, which has an analogous relationship to the standard Banach function spaces, Sobolev spaces, Besov spaces etc., that appear naturally in the study of partial differential equations.
www.amazon.ca /Function-Spaces-Potential-Theory-David/dp/3540570608   (426 words)

  
 Welcome to Henrik Shahgholian's home page; Publications / Preprints
41) Regularity of a free boundary in parabolic potential theory (Joint with L. Caffarelli and Arshak Petrosyan) J. Amer.
20) Regularity of a free boundary in potential theory with application to the Pompeiu problem (Joint with L. Caffarelli and L. Karp) Ann.
3) On the Newtonian potential of a heterogeneous ellipsoid, SIAM J. Math.
www.math.kth.se /~henriks/Henriks_page/publications.html   (1046 words)

  
 Potential Theory
Potential Theory is a branch of theoretical physics that deals with phenomena having to do with attraction or the distribution of physical effects through space.
Many other interesting applications of potential theory can be made in the areas of electromagnetism, heat propagation and nuclear physics.
Potential theory is applied in studies of the gravitational attractions of the Earth and other terrestrial planetary bodies.
mywebpages.comcast.net /macpurity/PotenTheor.htm   (430 words)

  
 Computer Science: Publication: Constructive Potential Theory: Foundations and Applications.   (Site not responding. Last check: )
Modern potential theory now study stochastic processes with their adjacent theory, higher order differential operators and their combination like stochastic differential equations.
Due to the inherently constructive character of axiomatic potential theory, classical logic has no enough ability to offer a proper logical foundation.
We construct an algebraic theory with models in stochastic analysis, and based on this, and a process algebra in the sense of computer science.
www.cs.kent.ac.uk /pubs/2002/1522/index.html   (314 words)

  
 Potential Theory in the Complex Plane - Cambridge University Press   (Site not responding. Last check: )
Potential theory is the broad area of mathematical analysis encompassing such topics as harmonic and subharmonic functions, the Dirichlet problem, harmonic measure, Green’s functions, potentials and capacity.
In addition there is a chapter on connections with functional analysis and dynamical systems, which shows how the theory can be applied to other parts of mathematics, and gives a flavour of some recent research.
Exercises are provided throughout, enabling the book to be used with advanced courses on complex analysis or potential theory.
www.cambridge.org /catalogue/catalogue.asp?ISBN=0521466547   (215 words)

  
 WP4 Dewpoint Water Potential Meter:Introduction
At temperature equilibrium, relative humidity is a direct measurement of water potential, so after measuring a sample, the instrument does some quick calculations to read out directly in water potential units (MPa).
Though temperature control is usually unnecessary for most water potential measurement applications, there are some instances where it is desirable.
To study the effects of temperature on the water potential of a sample, comparison of the water potential of different samples independent of temperature, or other water potential studies where temperature control is critical.
www.waterpotential.com /index.html   (361 words)

  
 Brookhaven Instruments Corporation, Zeta Potential Theory
Zeta potential is a measure of dispersion stability
At the shear plane, the potential difference is defined to be the zeta potential
The concentration of the potential determining ion at which the zeta potential is zero is defined as the isoelectric point (IEP)
www.bic.com /Zeta_Theory.html   (185 words)

  
 CAD Instruments: Zeta potential & streaming potential
Zeta potential, streaming potential, particle size, interfacial tension...
Another system is made to determine the streaming potential: ZETACAD.It is a specially designed, automated instrument for measuring zeta potential using the streaming potential technique.
Also, CAD is distributing in France other systems to measure contact angle, surface tension, interfacial tension, particle sizing...
www.cad-inst.com   (0 words)

  
 Plastic-Potential Theory from the Granular Volcano Group
The plastic potential theory will provide us a way to predict the velocity distribution within the granular medium at yield.
This theory makes the connection between stress and deformation (or velocity gradient) in using three concepts: a Yield Function (Y), a Plastic Potential Function (G), and a Flow Rule.
The simple Mohr-coulomb/von Mises law must be -somehow- adapted to the plastic potential flow theory for describing flowing granular medium accurately.
www.granular-volcano-group.org /plastic_potential_theory.html   (1491 words)

  
 Potential Theory   (Site not responding. Last check: )
This book bridges the gap between the classic texts on potential theory and modern books on applied geophysics.
It begins with Newton's second law of motion and concludes with topics on state-of-the-art interpretations of gravity and magnetic data.
The introductory chapters discuss potential theory, with emphasis on those aspects important to earth scientists, such as Laplace's equation, Newtonian potential, magnetostatic and electrostatic fields, conduction of heat, and spherical harmonic analysis.
pangea.stanford.edu /~blakely/potential.html   (208 words)

  
 Amazon.ca: Approximation, Complex Analysis, and Potential Theory: Books: Gert Sabidussi,Norair Arakelian,Paul M. ...   (Site not responding. Last check: )
Hermann Weyl considered value distribution theory to be the greatest mathematical achievement of the first half of the 20th century.
Since de Branges confirmed the Bieberbach conjecture, the primary problem in geometric function theory is to find the precise value of the Bloch constant.
A valuable introduction to currently active areas of complex analysis and potential theory.
www.amazon.ca /Approximation-Complex-Analysis-Potential-Theory/dp/1402000286   (476 words)

  
 index   (Site not responding. Last check: )
You private information will be kept strictly confidential and will be used in one case only: when a misprint or an error in the book is discovered, you will receive an e-mail with necessary information about the error or misprint.
V.I. Fabrikant, Applications of Potential Theory in Mechanics.
V.I. Fabrikant, Mixed Boundary Value Problems of Potential Theory and their Applications in Engineering.
www.geocities.com /fabrikant_books   (174 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.