AND, APERTURE, BLACK, BW, BY, DIFFRACT, DIFFRACTION, EFFECT, FRESNEL, GRAM, LIGHT, MACHINE, MONOCHROMATIC, NEAR-FIELD, OMIKRON, OPTICAL, OPTICS, PATTERN, PHOTONICS, PHYSICS, PRODUCED, RADIATION, SCIENCE, SCIENTIFIC, SCREW, SHADOW, SHADOWGRAM, SHADOWGRAPH, W, WHITE,