Radiation pressure on the boundary of a fluid and a metal. Waves of infinite width (1981)
The radiation pressure is evaluated for a plane electromagnetic wave that impinges obliquely through a polarized fluid on a metal surface. The starting point is the time-averaged momentum-balance...
Radiation pressure on the boundary of a fluid and a metal. Waves of finite width, (1981)
The effect of the finite width of a beam on its radiation pressure is studied. To that end the appropriate Fresnel relations are used in conjunction with the balance equation for the momentum flow at...
By means of a statistical derivation it is shown that the momentum-balance equation of a polarized fluid contains a force term that is the divergence of an anisotropic tensor (1/5)PP+(1/10)P/sup 2/U,...
Electrodynamics may be said to consist of two parts at different levels: microscopic and macroscopic theory. The first contains the laws that govern the interaction of fields and point...
Covariant equations of motion for a charged particle with a magnetic dipole moment (1970)
The Hamiltonian for a Dirac particle with anomalous magnetic moment in an electromagnetic field is transformed to even form up to terms linear in the coupling constant and without derivatives of the...
Covariant equations of motion for a charged particle with a magnetic dipole moment (1969)
By choosing a covariant position and spin operator equations of motion are derived for a Dirac particle in a non-uniform and time dependent field.
Abstract: From the atomic conservation laws of energy-momentum the corresponding macroscopic laws are derived with the help of a covariant averaging procedure. The total energy-momentum tensor is...
The relativistic material energy-momentum tensor in polarized media, which contains bulk terms, fluctuation terms and correlation terms, is studied especially in the nonrelativistic limit. On this...
The relativistic first law of thermodynamics for polarized media is derived from the conservation law of energy-momentum. The nonrelativistic second law for these systems is obtained from equilibrium...
The difference of the relativistic energy-momentum tensors of a substance with and without fields is derived for the case of thermodynamic equilibrium and linear constitutive relations. It may be...
The literature on the relativistic energy-moment tensor in polarized media falls apart in treatments based on microscopic first principles and considerations starting from macroscopic postulates....
The relativistic energy-momentum tensor in polarized media (1967)
The relativistic energy-momentum tensor of the electromagnetic field in electric and magnetic dipole substances is derived and compared with the proposals of Lorentz, Einstein-Laub, Minkowski and...
On the uniqueness of the relativistic energy-momentum tensor in polarized media (1967)
The energy-momentum tensor in a polarized medium, as derived from microscopic theory, can be looked upon as the sum of a material part, defined at zero field, and a field part. It can then be shown...
The relativistic conservation laws of energy and momentum in a substance, which consists of atoms carrying both electric and magnetic dipoles, is derived from the microscopic force laws for point...
The angular momentum balance of matter in an electromagnetic field on the atomic level is derived from microscopic theory. As a consequence an energy-momentum tensor can be constructed, which is...
The relativistic energy-momentum tensor in a dielectric (1966)
The relativistic energy-momentum tensor of the electromagnetic field is derived from electron theory and compared with the forms proposed by Abraham and Minkowski
The Maxwell equations are derived in covariant manner from the microscopic equations for the electromagnetic field in the presence of point charges. The polarization tensor is given as an expansion...
Coefficients of viscosity for a fluid in a magnetic field or in a rotating system (1954)
Hooyman, G.J., Mazur, P., Groot, S.R. De
The linear equations between the elements of the viscous pressure tensor and the rates of deformation are investigated for the case of an isotropic fluid in an external magnetic field or for the...
Transformation properties of the onsager relations (1954)
Hooyman, G.J., Groot, S.R. De, Mazur, P.
The invariance of the Onsager reciprocal relations under simultaneous linear transformations of the fluxes and forces occurring in the expression for the entropy production is investigated for the...
Phenomenological equations and onsager relations : the case of dependent fluxes or forces (1954)
The influence of linear dependencies between the fluxes or between the forces occurring in the expression for the entropy production on the phenomenological coefficients and the Onsager reciprocal...
Thermodynamics of irreversible electrochemical phenomena (1953)
Groot, S.R. De, Mazur, P., Tolhoek, H.A.
A discussion from first principles is given of the energy and entropy laws in electrochemical systems. It is found that it is possible to clarify such controversial concepts as the form of the second...
Angular distribution of radiation emitted by arbitrary ensembles of nuclei (1953)
An arbitrary ensemble is described by a density matrix with arbitrary values of its matrix elements. An equivalent description is given by Fano's statistical tensors, which are used in this paper. A...
Kluitenberg, G.A., Groot, S.R. De, Mazur, P.
The relativistic thermodynamics of irreversible processes is developed for an isotropic mixture in which heat conduction, diffusion, viscous flow, chemical reactions and their cross-phenomena may...
On onsager's relations in a magnetic field (1953)
Onsager's theory is extended to the case of systems with a magnetic field, which is a continuous function of space. The reciprocal relations between phenomenological coefficients are found to be...
Thermodynamics of irreversible processes in rotating systems (1953)
Hooyman, G.J., Holtan, H., Mazur, P., Groot, S.R. De
The general entropy balance equation for a rotating system containing a mixture of (charged and uncharged) components is calculated and the influence of centrifugal force and Coriolis force on the...
Cox, J.A.M., Groot, S.R. De, Hartogh, Chr.D.
In this note the theoretical results for the angular distribution of γ-radiation emitted by oriented radioactive nuclei are applied to the case of 58Co nuclei. The angular distribution function of...
On the theories of angular distribution and correlation of beta and gamma radiation (1952)
In both phenomena of angular distribution and angular correlation, one has nuclear radiation from ensembles of nuclei with an unequal population of the magnetic sub-levels. This population is...
On the ground state of a model for compressed helium (1952)
Seldam, T.A. Ten, Groot, S.R. De
In the problem of the “compressed helium atom”, the boundary condition that the wave function ψ must vanish at infinity (r = ∞), is replaced by: ψ = 0 at a finite r = r0. This problem is...
Seldam, C.A. Ten, Groot, S.R. De
From Jensen's and Gombás' modification of the statistical Thomas-Fermi atom model, a theory for compressed atoms is developed by changing the boundary conditions. Internal kinetic energy and...
A discussion of the first law of thermodynamics for open systems (1952)
In this paper it is discussed to what extent the first law of thermodynamics is a physical law, and to what extent it is a definition, if it is generalized so as to be valid for open systems. The...
The consequences of alignment of nuclei, which show allowed ß-transitions, are investigated. A general formula is derived for the transition probability of an allowed β-transition, in which the...
The influence of electric and magnetic fields on the spin orientation (polarization) of electrons in a beam is calculated according to the Pauli spin theory and the Dirac theory. For the cases, where...
Non-equilibrium thermodynamics and liquid helium II (1950)
Groot, S.R. De, Jansen, L., Mazur, P.
The thermodynamics of irreversible processes, based on the O n s a g e r reciprocal relations, is applied to a system consisting of a mixture of two substances, of which one can go over into the...
In the general case of a quantum mechanical system with a Hamiltonian that is invariant for rotations spatial degeneracy will exist. So the initial state must be characterized except by the energy...