These images are created by photographing slide specimens of crystals at different levels of magnification. The color is created by utilizing crossed polarizing filters. One polarizer is set below the specimen ( the polarizer ) and one above ( the analyzer ). Polarizing filters align light rays into planes parallel to the alignment of the polarizing crystals which make up the filter ( almost think of them like venetian blinds ) . Light from one polarizing filter will only pass through the second if they're aligned the same way. By crossing them no light from the first can pass through the second, which gives you the black areas in the images. When you place a slide specimen of a crystal between the two, the light refracts across the crysalline surfaces creating the colors in a process known as birefringence. This refraction in turn changes the direction of some of the light waves which allows it to pass through the second polarizer and allows you to view and photograph the colors and textures that are created.
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