A very typical and important application of Electromagnetic Acoustic Transducers (EMATs) is the inspection of ferritic steels with normal bias field transducers. In this case, a controversy has arisen in the literature, as some older studies have indicated the Lorentz force as the main transduction mechanism, while more recent research has claimed that magnetostriction can be two order or magni...

In this paper, a generic self-similar flux rope model is proposed to probe the internal state of CMEs in order to understand the thermodynamic process and expansion of CMEs in interplanetary space. Using this model, three physical parameters and their variations with heliocentric distance can be inferred based on coronagraph observations of CMEs’ propagation and expansion. One is the polytropic...

We experimentally characterize magnetic field fluctuations in a strongly turbulent flow of liquid sodium in the presence of a large externally applied field. We reach high interaction parameter (up to N = 17) for moderate magnetic Reynolds number (up to Rem = 18), a previously unexplored parameter range for liquid metal flows. As the interaction parameter (i.e. the ratio of Lorentz to inertial ...

It is proved that within the framework of Special Relativity, a force exerted on a classical particle by a field must be of the form E+v×B, the Lorentz force form.

Concentration variations observed at circular electrodes with their axis parallel to a magnetic and normal to the gravitational field have previously been attributed elsewhere to the concentration gradient force only. The present paper aims to show that Lorentz force driven convection is a more likely explanation. preprint, finally published in Electrochemistry Communications 9 (2007), 2479–248...

Theories that spontaneously break Lorentz invariance also violate diffeomorphism symmetries, implying the existence of extra degrees of freedom and modifications of gravity. In the minimal model (“ghost condensation”) with only a single extra degree of freedom at low energies, the scale of Lorentz violation cannot be larger than about M ∼ 100 GeV due to an infrared instability in the gravity se...

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In the presence of transport currents, the vortex structure in a type-II superconductor is subjected to the Lorentz force. This force per unit length of a vortex is fL= j3fW 0, where j is the transport current density, fW 0=f0B /B, B is the magnetic induction, and f0 is the flux quantum. The Lorentz force acting on a unit volume of a vortex matter is therefore given by FL=nfL= j3B, where nsrd=B...