This is a preview. Log in through your library . Abstract A scaling argument is used to derive reflectionless sponge layers to absorb outgoing time-harmonic waves in numerical solutions of the ...

Why are all planets in space spherical or elliptical and not rectangular or any other shape? As every planet has its own gravitational force, all particles are forced together towards the centre of ...

A coordinate system is a set of numbers that allows you to specify the location of a point in some space. The Cartesian coordinates is one such system, which uses a set of three numbers to specify the ...