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  2. Alumina effect pigment - Wikipedia

    en.wikipedia.org/wiki/Alumina_effect_pigment

    The pigments obtainable at the market possess a narrow particle size distribution of about 5 to 30 μm as well as a high aspect ratio. The sparkle effect referred to above has its origin in the optimized thickness of all layers in the pigment structure, including the Al 2 O 3 substrate. Analytical investigations show that the thickness range of ...

  3. Fireworks - Wikipedia

    en.wikipedia.org/wiki/Fireworks

    An effect created by large, slow-burning stars within a shell that leave a trail of large glittering sparks behind and make a sizzling noise. The "time" refers to the fact that these stars burn away gradually, as opposed to the standard brocade "rain" effect where a large amount of glitter material is released at once.

  4. Alpha compositing - Wikipedia

    en.wikipedia.org/wiki/Alpha_compositing

    A color spectrum image with an alpha channel that falls off to zero at its base, where it is blended with the background color.. In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. [1]

  5. Special effects of The Empire Strikes Back - Wikipedia

    en.wikipedia.org/wiki/Special_effects_of_The...

    It was filmed on a black-and-white print stock on a darker background, which helped conceal the matte lines at the expense of being partially transparent. [99] Muren noted in the original negative, this flaw resulted in the hangar lights shining through the creature; because it was a short segment, it was ignored.

  6. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats.The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible.

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  8. Lava lamp - Wikipedia

    en.wikipedia.org/wiki/Lava_lamp

    A formula from a 1968 US patent consisted of water and a transparent, translucent, or opaque mix of mineral oil, paraffin wax, and carbon tetrachloride. [3] p. 2, line 30 The clear water or mineral oil can optionally be coloured with translucent dyes. Common wax has a density much lower than that of water and would float on top at any temperature.

  9. Glossary of motion picture terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_motion_picture...

    A post-production visual effects technique for compositing or layering two images or video streams together based on color hues: a specific range of color(s) in the background of the first shot is made transparent, allowing separately recorded footage or a static image to be displayed in the transparent areas instead, giving the appearance that ...