[en] We show that one of the problems, considered in Aguirregabiria J M, Hernandez A and Rivas M (2004 Eur. J. Phys. 25 555-68), contains an error. Namely, under a motion of a point charge near a conducting toroidal solenoid, the effect of the polarization of the solenoid in the electric field of charge should be taken into account. This effect vanishes the electromagnetic linear momentum and recovers the equality of an action and reaction for this problem. (letters and comments)

[en] In this paper we formulate a number of teaching paradoxical problems, dealing with the energy-momentum conservation law in a bound electromagnetic field

[en] In this paper, we present a resolution of apparent paradoxes formulated in [2] and deal with the relativistic transformation of force

[en] In this paper, we present a resolution of apparent paradoxes formulated in (Kholmetskii A L 2006 Apparent paradoxes in classical electrodynamics: the energy-momentum conservation law for a bound electromagnetic field Eur. J. Phys. 27 825-38; Kholmetskii A L and Yarman T 2008 Apparent paradoxes in classical electrodynamics: a fluid medium in an electromagnetic field Eur. J. Phys. 29 1127) and dealing with the energy flux in a bound electromagnetic field

[en] In this paper, we analyse a number of paradoxical teaching problems of classical electrodynamics, dealing with the relativistic transformation of force for complex macro systems, consisting of a number of subsystems with nonzero relative velocities such as electric circuits that change their shape in the course of time

[en] The paper stresses the importance for basic physics of the new proposed Champeney-like rotor experiment with nuclear resonant scattering of synchrotron radiation. Such an experiment, being sensitive to energy shifts proportional to c^-3 (c is the light velocity in vacuum), should be able to distinguish between predictions of special relativity theory and covariant ether theories, and thus allow to differentiate between them. The results of computer simulations of experiments with the 14.4 keV resonance in ⁵⁷Fe show that an energy resolution ΔE/E at the level of 10^-16 can be expected which is enough to reveal the third order term.

[en] We present our reply to the criticism by Franklin (2010 Comment on 'Energy flow in a bound electromagnetic field: resolution of apparent paradoxes' Eur. J. Phys. 31 L17) and show that the main body of his remarks is irrelevant. (letters and comments)

[en] In this paper we analyse a number of teaching paradoxes of classical electrodynamics, dealing with the relativistic transformation of energy and momentum for a fluid medium in an external electromagnetic field. In particular, we consider a moving parallel plate charged capacitor, where the electric attraction of its plates is balanced by the pressure of gas convicted between the plates

[en] We continue to analyse the known law of adiabatic transformation for an ideal gas PV^5/3 = Constant, where P is the pressure and V is the volume, and following the approach of non-relativistic quantum mechanics which we suggested in a previous work (Yarman et al. 2010 Int. J. Phys. Sci. 5 1524). We explicitly determine the constant for the general parallelepiped geometry of a container. We also disclose how the quantum numbers associated with molecules of an ideal gas vary through an arbitrary adiabatic transformation. Physical implications of the results obtained are discussed. (physics of gases, plasmas, and electric discharges)

[en] We continue to analyze the Poynting theorem for the bound (velocity-dependent) electromagnetic (EM) field, initiated in our earlier paper (A L Kholmetskii et al 2011 Phys. Scr. 83 055406), and show that the character of the flow of EM energy substantially depends on the question of whether a bound EM field delivers the work to moving charged particles, or not. The latter case corresponds to the situation where the system of charged particles uniformly moves in space (which implies the presence of some forces of non-EM origin, which counteract EM interaction), and the entire EM energy density rigidly propagates in space along with the given system of charges. In the general case of arbitrary motion of interacting charged particles, the flow of EM energy is guided by the interactional part of the Poynting vector. A transition between these limited cases is explored, and physical implications of the obtained results are discussed. (paper)