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The volume magnetic susceptibility, represented by the symbol χ v (often simply χ, sometimes χ m – magnetic, to distinguish from the electric susceptibility), is defined in the International System of Units – in other systems there may be additional constants – by the following relationship: [4] [5]
In physics the susceptibility is a quantification for the change of an extensive property under variation of an intensive property. The word may refer to: The word may refer to: In physics , the susceptibility of a material or substance describes its response to an applied field.
The Meissner effect - The Feynman Lectures on Physics Meissner Effect (Science from scratch) Short video from Imperial College London about the Meissner effect and levitating trains of the future. Introduction to superconductivity Video about Type 1 Superconductors: R = 0/Transition temperatures/ B is a state variable/Meissner effect/Energy gap ...
The hyperpolarizability, a nonlinear-optical property of a molecule, is the second order electric susceptibility per unit volume. [1] The hyperpolarizability can be calculated using quantum chemical calculations developed in several software packages. [2] [3] [4] See nonlinear optics.
The magnetization is the negative derivative of the free energy with respect to the applied field, and so the magnetization per unit volume is = , where n is the number density of magnetic moments. [1]: 117 The formula above is known as the Langevin paramagnetic equation.
In electricity (electromagnetism), the electric susceptibility (; Latin: susceptibilis "receptive") is a dimensionless proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field. The greater the electric susceptibility, the greater the ability of a material to polarize in ...
Accordingly, physicists and engineers usually define magnetization as the quantity of magnetic moment per unit volume. [1] It is represented by a pseudovector M . Magnetization can be compared to electric polarization , which is the measure of the corresponding response of a material to an electric field in electrostatics .
In physics, a partition function describes the statistical properties of a system in thermodynamic equilibrium. [ citation needed ] Partition functions are functions of the thermodynamic state variables , such as the temperature and volume .