readme.txt

lorenz-mie散射理论太麻烦了

MiePlot v4.0

In 1908, Gustav Mie developed a rigorous method to calculate the intensity of light scattered by uniform spheres.  Although Mie's solution was precise, it involved a huge number of calculations for large spheres and was rarely used until the 1980s when supercomputers became available for scientific research.  

The rapid advances in computer power over the last few years allow Mie scattering calcuations on standard personal computers. The MiePlot computer program uses the Mie algorithm to produce full-colour simulations of atmospheric optical effects, such as rainbows, coronas and glories.  Such simulations can be superimposed on photographs of natural effects.  

MiePlot offers the following mathematical models for the scattering of light by a sphere: 

     Mie theory
     Debye series
     Ray tracing (based on geometrical optics) 
     Ray tracing including the effects of interference between rays 
     Airy theory 
     Rayleigh scattering 
     Diffraction 
     Surface waves

MiePlot can plot graphs of scattered intensity as a function of scattering angle, radius, wavelength, refractive index - as well as "Lee diagrams". In addition, it can produce graphs of scattering cross-sections (Cext, Csca & Cabs) and scattering efficiencies (Qext, Qsca & Qabs) as functions of radius of the scattering sphere, size parameter or wavelength.  

Many examples of MiePlot's graphical outputs and simulations of atmospheric optical effects are available at www.philiplaven.com.. 

Please consult the Help file for detailed instructions about using the many features of MiePlot.

If you experience any problems using MiePlot or have any suggestions for new facilities, please send an e-mail to the author Philip Laven at [e-mail]


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Installation instructions


Having downloaded MiePlot.zip, you should extract the archived files into an appropriate directory on your computer (e.g. C:\Program Files\MiePlot).  The following files should be located in the same directory:

    MiePlot v4000.exe (or a subsequent version, such as MiePlot v4202.exe)
    MiePlot.hlp		    Help file
    MiePlot.cnt		    Help contents file 
    ReadMe.txt		    This file 
    Segelstein.txt	    Data file on the refractive index for water
    spectrum.spe	    Sample data file for spectrum of incident light
    gold.rix		    Sample file for refractive index of gold
    Normal_R5_SD20.dis      Sample file for Normal distribution of radius of spheres
    LogNormal_R5_SD20.dis   Sample file for Log-Normal distribution of radius of spheres

To run MiePlot, simply run MiePlot v4000.exe by double clicking on this file using Windows Explorer. 

Note that MiePlot was originally designed for displays with 1024 x 768 pixels.  Although the basic features work on 800 x 600 displays, 1024 x 768 displays give much better results.  If you are still using a display with 640 x 480 pixels, MiePlot will not be usable at this resolution - sorry!  

For displays using more than 1024 x 768 pixels, MiePlot now adjusts the layout to fit the screen.  This feature has been tested on various displays up to 1600 x 1200 pixels.  Please let me know if you experience any problems with this new feature.

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Microsoft Windows: International settings

Users of PCs configured in languages other than English may find that MiePlot fails to start properly giving an error message headed 揗icrosoft Windows: problem with International Settings