# Difference between revisions of "Radiation condition"

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A prescribed value of a solution or its derivative or some combination on a mathematical surface in a problem. Such a surface need | A prescribed value of a solution or its derivative or some combination on a mathematical surface in a problem. Such a surface need | ||

− | not be the confining surface of a finite volume, but may be any desired surface. When a medium is ''unbounded'' | + | not be the confining surface of a finite volume, but may be any desired surface. When a medium is ''unbounded'' the surface |

− | + | which contains it is taken to be infinitely distant from the source and receiver. ''Radiation conditions'' are the boundary condition for | |

− | the boundary at infinity. | + | the boundary at infinity. A radiation condition is necessary to guarantee a unique solution in physical science problems. |

## Revision as of 14:32, 18 April 2017

A prescribed value of a solution or its derivative or some combination on a mathematical surface in a problem. Such a surface need
not be the confining surface of a finite volume, but may be any desired surface. When a medium is *unbounded* the surface
which contains it is taken to be infinitely distant from the source and receiver. *Radiation conditions* are the boundary condition for
the boundary at infinity. A radiation condition is necessary to guarantee a unique solution in physical science problems.