Scattering is a general physical process whereby some form of radiation, such as light, sound, or moving particles, is forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium through which it passes. In conventional use, this also includes deviation of reflected radiation from the angle predicted by the law of reflection. Reflections that undergo scattering are often called diffuse reflections and unscattered reflections are called specular (mirror-like) reflections.
The types of non-uniformities that can cause scattering, sometimes known as scatterers or scattering centers, are too numerous to list, but a small sample includes particles, bubbles, droplets, density fluctuations in fluids, defects in crystalline solids, surface roughness, cells in organisms, and textile fibers in clothing. The effects of such features on the path of almost any type of propagating wave or moving particle can be described in the framework of scattering theory.
In physical descriptions of scattering, physicists commonly distinguish between two broad types, elastic and inelastic. Elastic scattering involves no (or very small) loss or gain of energy by the radiation. Inelastic scattering does involve some change in the energy of the radiation. These terms derive from the kinetic theory of the collision of solid bodies, which can often be used to model scattering processes.
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Quantum Mechanical Scattering - This JAVA applet integrates the Schrödinger wave equation and produces an animated wavepacket
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Quantum Scattering Theory and Applications - A brief introduction to quantum scattering as well as a full-text Ph.D. thesis from Adam Lupu-Sax.
Time Development of Quantum Mechanical Systems - This document presents the results of the solution of the time dependent Schrodinger equation for one- and two dimensional one particle systems. Simulation results for different V(r) potentials are displayed as images and animation. The program to calculate the images is also available.
Visualization of Quantum Scattering - Animation of 3-dimensional quantum scattering of a neutron off an aluminum target.
How fundamental particles may workNuclear engineer Keshe developed new plasma reactors. He states that fundamental particles and atoms are made of specific entangled plasmatic magnetic fields. To envisage how the entanglement of two plasmatic magnetic fields may happen he shows in this movie how two plasmatic magnetic fields - each with a central field and three connected opposite fields (legs) - are approaching each other in such a way that the central field has the same magnetic pole facing the other central field |