I(q) function calculator
This Javascript calculates the scattering curve I(q) of models consisting of up to 20 spheres with different x/y/z coordinates and optionally different radii and different electron densities using the Debye-formula in reciprocal space. Enter the number of spheres, their coordinates x(i), y(i), z(i), their radii r(i) and their electron-densities c(i). The spheres can also overlap (totally or partially) where the resulting electron density of the overlapping region is the sum of the overlapping electron densities. For N points the scattering curve from q = 0 to qz with a scaling factor f (optionally also in a logarithmic intensity scale) will be calculated. The values are listed in q vs I(q) or vs log(I(q)) in arbitrary units and can be copied and pasted from the window into any text-file for further processing and graphical displaying.