Magnetic Forces Subject

If particles are magnetism-sensitive, they are subjected to a magnetic force once they are exposed to an electromagnetic field in a gas-solid flow. The magnetic force, Fm, is given... 

The enthalpy and the entropy change for a system not subjected to any external forces, such as electrical or magnetic forces, and not undergoing any significant volume change. 

Because both B and / will tend to be proportional to an external field, dividing Eq. 11.32 by // yields ratios (//// and BlH ) that will be essentially constant for a given substance. The term called the magnetic permeability, is a ratio of the density of the magnetic force lines in the presence of the sample to the same density with no sample for a vacuum this ratio will be equal to I. The term I/H is the magnetic susceptibility per unit volume (k), which expresses the degree to which a material is subject to magnetization ... 

Preliminarily, deriving the terms on the LHS of the Boltzmann equation, we assume that the effects of collisions are negligible. The molecular motion is thus purely translational. We further assume that in an average sense each molecule of mass m is subjected to an external forces per unit mass, F(r,t), which doesn t depend on the molecular velocity c. This restriction excludes magnetic forces, while the gravity and electric fields which are more common in chemical and metallurgical reactors are retained. 

With the aim of presenting only the effects of the sample subjected to the magnetic field, the effects of the magnetic force on the results were discounted... 

Susceptibility (magnetic) n. Measured by the ratio of the intensity of magnetization produced in a substance to the magnetizing force or intensity of field to which it is subjected. The susceptibility of a substance will be unity when unit intensity of magnetization is produced by a field of 1 G. Dimension [e L T ], /i]. 

A spherical paramagnetic particle in a paramagnetic solution is subjected to a magnetic force due to a local magnetic field intensity H (in vacuum). Consider the situation where the magnetic permeabilities of the particle and the solution are related to the corresponding susceptibilities Xp and Xs via... 

Fig. 7. (a) Example chromatin assembly curve recorded at 1.3 pN force applied to the magnetic bead. A magnification of the squared portion of the curve is also presented, (b) Assembly curve of the same DNA molecule, subjected to difference forces in the course of a single assembly round (forces were adjusted by adjusting the distances between the cuvette and the external magnet as indicated). The lines drawn indicate that the assembly rate changes as a function of force. Note the immediate response of the assembly reaction to the changing force. 

Nuclei that behave like small mc ets (have a mc etic moment) are subject to the influence of other mc ets. In an NMR spectrometer, the sample resides in a Icirge external magnetic field. This external field forces the nuclei to align themselves either with the field or against the field. Nuclei with one alignment... 

---