Magnetic field strengths inferred for relativistic outflows including gamma-ray bursts (GRB) and active galactic nuclei (AGN) are larger than naively expected by orders of magnitude. We present three-dimensional relativistic magnetohydrodynamics (MHD) simulations demonstrating amplification and saturation of magnetic field by a macroscopic turbulent dynamo triggered by the Kelvin-Helmholtz shea...

A technique for evaluating the electromagnetic Casimir energy in situations involving spherical or circular boundaries is presented. Zeta function regularization is unambiguously used from the start and the properties of Bessel and related zeta functions are central. Nontrivial results concerning these functions are given. While part of their application agrees with previous knowledge, new resu...

We review some properties of a relativistic classical massless charged particle with 9 spin interacting with an external electromagnetic field. We give in particular a proper definition 10 of kinetic energy and total energy, the latter being conserved when the external field is stationary. 11 We find that the particle’s velocity may differ from c as a result of the spin electromagnetic field 12...

The radiation pressure of a radio pulsar does not necessarily disrupt a surrounding disk. The position of the inner radius of a thin disk around a neutron star, determined by the balance of stresses, can be estimated by comparing the electromagnetic energy density generated by the neutron star as a rotating magnetic dipole in vacuum with the kinetic energy density of the disk. Inside the light ...

The reniform nematode Rotylenchulus reniformis was reduced in the upper 10 cm of soil with application of UHF electromagnetic energy. Bioassay of treated soil indicated no delayed effect on the population from the treatment. The population was significantly reduced by hot water treatments at 40 C for 10 min, and at 45 C for 5 and 10 min, 50 C and above killed all nematodes. Data were inconclusi...

Photosynthesis is the utilization of radiant energy for the synthesis of complex organic molecules. The phototrophic way of life implies the capture of electromagnetic energy (see Light absorption and light energy transfer in prokaryotes), its conversion into chemical energy (see Conversion of light into chemical energy), and its use for cellular maintenance and growth (see Efficiency of growth...

and that the (interaction) electromagnetic field energy of the system is also given by eq. (5). A systematic approximation to electromagnetic fields and energies when the velocities of all charges are small compared to c, and when effects of radiation can be ignored, was given by Darwin in 1920 [3]. This approximation is reviewed in sec. 65 of [1], where it is implied that the Darwin Hamiltonia...

Transmission lines are used to transmit energy such as acoustic or electromagnetic waves or bulk of electrical energy from one place to another, and co-axial shielded cable of them. Other means of transportation are two-wires (twisted pair cable and un-twisted pair cable). All such transmission lines are prone to noise coupling from ambient environment, for example, noise from capacitive coupli...

The jets observed to emanate from many compact accreting objects may arise from the twisting of a magnetic field threading a differentially rotating accretion disk which acts to magnetically extract angular momentum and energy from the disk. Two main regimes have been discussed, hydromagnetic jets, which have a significant mass flux and have energy and angular momentum carried by both matter an...

Interactions between galactic cosmic rays and matter are a primary focus of the NASA radiation problem. The electromagnetic forces involved are for the most part well documented. Building on previous research, this study investigated the relative importance of the weak forces that occur when a cosmic ray impinges on di!erent types of materials. For the familiar electromagnetic case, it is known...