{{twoimg|FDTD31(1).png|A pyramidal object with a slanted plate|FDTD32(2).png|An adaptive FDTD mesh}}
{{twoimg|FDTD26.png||FDTD25.png|]]}}
{{twoimg|FDTD27.png||FDTD28.png|]]}}
The geometry of a sphere and its regular and adaptive FDTD meshes (top and perspective views).