Inflatable pig floating above the Battersea Power Station in London, England. The geometry consists of 120,872 triangles. On a higher-end PC, the solution time for this problem is about ten minutes and memory usage about 1Gig. The scene was, of course, inspired by the Pink Floyd classic Animals .

The Stanford Bunny is a common benchmark problem in computer graphics.

Scattering:

Acoustic scattering of a plane wave from a dinosaur. The source density that generates the backscattered wave is shown.

Wave propagation in dielectric waveguides: Dielectric slab waveguides are characterized by their dispersion relations, which are the propagation constants of the modes as a function of the frequency. Below cutoff, the propagation constants are complex and the characteristic equation is a four-valued function. To better understand the coupling of modes near cutoff, it is instructive to consider the change of variables

Here, z is the new variable, k is the frequency n0, nJ are the refractive indices in the semiinfinite layers and beta the propagation constant. This is a movie that shows how the modes z(k)/k evolve for k from 0 to 15. This waveguide has five interior layers with refractive indices between 1.53 and 1.66. The indices in the semiinfinite layers are 1.5 and 1.0. The guided modes appear to the right of the circle. The other modes are either leaky or non-physical.

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