Fig. 17. Reflectance and transmittance computed for samples with and without bound water. The refractive index of water is _w = 1.33 + i4 x 10^–8, of ice _i = 1.305 + i2 x 10^–8, and of soil _s = 1.8 + i5 x 10^–5. The image size was 6.3 by 1.8 mm. The incident light was collimated.