Changes
/* Dispersive Materials */
where <math>\omega _p</math> and <math>\delta_p</math> are the angular resonant frequency and angular damping frequency corresponding to the p''th'' pole, respectively, and both are expressed in rad/s. Similar to a Debye material, <math>\Delta \varepsilon_p = \varepsilon_{sp} - \varepsilon_{\infty}</math> represents the change in permittivity due to the p''th'' pole.
{| cellspacing="1" cellpadding="1"
[[File:FDTD8.png|thumb|left|250px|Debye Material Dialog]]
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[[File:FDTD7.png|thumb|left|250px200px|Debye Add Pole Dialog]]
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[[ImageFile:FDTD10.png|thumb|left|250px|Drude Material Dialog]]
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[[ImageFile:FDTD9.png|thumb|left|200px|Drude Add Pole Dialog]]
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[[ImageFile:FDTD12.png|thumb|left|250px|Lorentz Material Dialog]]
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[[ImageFile:FDTD11.png|thumb|left|200px|Lortentz Add Pole Dialog]]
|}
===Geometrical Rules & Material Hierarchy===
