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[[Image:MESH MAN9.png|thumb|left|640px540px|The geometry of two dielectric spheres with the same material properties but belonging to two different object groups.]]
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[[Image:MESH MAN11.png|thumb|left|640px540px|The FDTD mesh of the two dielectric spheres. The left sphere is meshed using a global density of 20 cells/λ<sub>eff</sub>, while the right sphere is meshed using a locked density of 100 cells/λ<sub>eff</sub>.]]
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[[Image:MESH MAN10.png|thumb|left|640px540px|The top view of the mesh of the two dielectric spheres also showing the XY grid plane.]]
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