檢視 $N r, N i, alpha 的原始碼

=='''Format'''==
 $N_r, N_i, alpha // float, float, float

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Optical properties for shell material.
<math>N_r</math> and <math>N_i</math> are real part and imaginary part of refraction index, respectively. <math>\alpha</math> is the absorption coefficient. <br>

The 1st line is the data for outer space, the 2nd line is the data for 1st shell, the 3rd line is the data for 2nd shell, etc. <br>
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=='''Example'''==
 $N_r       N_i       alpha 
 ShellPro 
 1.00000   1.00000   1.00000

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