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In page Elsa M. Garmire:
"In her Caltech lab, Garmire experimented with light patterns caused by shining laser beams through transparent random or structured materials, such as dried clear glue on glass or patterned Plexiglas. These diffused the coherent light into abstract shapes with pure colors, internal diffraction pattern texture, and a shimmering speckle. By rotating the diffusing material, the shapes would slowly evolve into new forms.[citation needed]
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