http://www.math.ubc.ca/~cass/courses/m309-03a/m309-projects/krzak/http://en.wikipedia.org/wiki/Diffractionhttp://buphy.bu.edu/ulab/intro2/diffraction.pdfhttp://m.everythingscience.co.za/grade-11/06-2d-and-3d-wavefronts/06-2d-...