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2. Glitter - Wikipedia

   en.wikipedia.org/wiki/Glitter

   Close-up of holographic glitter. Glitter is an assortment of flat, small, reflective particles that are precision cut and come in a variety of shapes, sizes, and colors. Glitter particles reflect light at different angles, causing the surface to sparkle or shimmer. Glitter is similar to confetti, sparkles and sequins, but somewhat smaller.

3. Holographic optical element - Wikipedia

   en.wikipedia.org/wiki/Holographic_optical_element

   Holographic optical element (HOE) is an optical component (mirror, lens, directional diffuser, etc.) that produces holographic images using principles of diffraction.HOE is most commonly used in transparent displays, 3D imaging, and certain scanning technologies.

4. Glass flakes - Wikipedia

   en.wikipedia.org/wiki/Glass_flakes

   Glass flakes can be applied in anti-corrosive coatings, paints and pigments to prevent corrosion. [4] [5] Glass flakes can also be used as a reinforcement material in the manufacture of composite materials. [6] Glassflakes or glass flake particles form dense, inert barriers within the paint film.

5. Holography - Wikipedia

   en.wikipedia.org/wiki/Holography

   Two photographs of a single hologram taken from different viewpoints. Holography is a technique that enables a wavefront to be recorded and later reconstructed. It is best known as a method of generating three-dimensional images, and has a wide range of other uses, including data storage, microscopy, and interferometry.

6. Metallic paint - Wikipedia

   en.wikipedia.org/wiki/Metallic_paint

   Metallic paints may be generically referred to as metal-flake paint, but a specific variation uses larger flakes of metal that are individually visible. Flakes with different colour effects may also be used within the same paint. [3] Pearlescent paint uses embedded pieces of iridescent material to produce subtly different colours depending on ...

7. Photographic emulsion - Wikipedia

   en.wikipedia.org/wiki/Photographic_emulsion

   The emulsion is usually coated onto a substrate of glass, films (of cellulose nitrate, cellulose acetate or polyester), paper, or fabric. The substrate is often flexible and known as a film base . Photographic emulsion is not a true emulsion , but a suspension of solid particles (silver halide) in a fluid (gelatin in solution).