I guess you are confused with Fields and Intensity. The image generated represent fields which, unlike intensity, have values positive, zero and negative as well (just for example you can assume fields are like sine function while intensity/power are square of sine ). Now if one tries to represent these fields by two color scheme (like gray scale image) then one looses the info about the sign of field. So, best way to represent them is using three color scheme as noted by you where one could make out the amplitude as well as sign easily.
On 19 September 2012 15:34, Mukul <[email protected]> wrote: > The image generated for a rectangular waveguide has three colours : blue, > white > and red. It is written there that they correspond to negative, zero and > white > respectively. What is meant by this ? > > > _______________________________________________ > meep-discuss mailing list > [email protected] > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > -- ................................................................... Regards, manish
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