Spiral Zone Plates and Moire Pattern - PostScript

Postscript lattices

A few lattices for the demonstration of the moire pattern (or moire fringes, wikipedia) and for diffractions.

You can open .ps files in GhostScript+GSView (http://www.cs.wisc.edu/~ghost). You can open PostScript files in any text editor - it is a programming language.

You can print the files on foil, but the quality is going to be poor (600dpi) and the contrast will very low. The best is to use DTP polygraphic technique (1200-3600dpi, higher is better; high contrast).

Additional didactical stuff

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