Electromagnetic wave propagating along a space curve

Velocity-Space Diffusion in a Perpendicularly Propagating Electrostatic Wave

The motion of ions in the fields B = B0ẑ and E = E0ŷ cos(k⊥y−ωt) is considered. When ω ≫ Ωi and v⊥ ∼> ω/k⊥, the equations of motion may be reduced to a set of difference equations. These equations exhibit stochastic behavior when E0 exceeds a threshold. The diffusion coefficient above the threshold is determined. Far above the threshold, ion Landau damping is recovered. Extension of the method ...

Propagating Magnetic Wave Plasma Accelerator (PMWAC) for Deep Space Exploration

Dispersive Waves Propagating along a Surface Fracture

Significant work in the past few decades has lead to a well developed understanding of seismic wave propagation in fractured media. However, previous research has focused on fractures within rock as opposed to fractures at the surface of a rock. A theoretical and experimental study was performed to examine seismic wave propagation along a fracture at the surface, i.e., along the intersection of...

Wave of Stiffness Propagating along the Surface of the Newt Egg during Cleavage

In the eggs of the newt, Cynops (Triturus) pyrrhogaster, change in stiffness of the cortex was measured in various regions at the time of the cleavage. Measurements were performed by Mitchison and Swann's cell elastimeter method with a modification, in which two fine pipettes were attached to the surface of one egg at the same time, in order to compare the rigidity of two regions. The stiffness...

Computational biology: A propagating wave of interest

Systems biology, computational biology, integrative biology... many names are being used to describe an emerging field that is characterized by the application of quantitative theoretical methods and tendency to take a global view of problems in biology. This field is not entirely novel, but what is clear and significant is that the life sciences community recognizes its increasing importance. ...