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  2. Tint, shade and tone - Wikipedia

    en.wikipedia.org/wiki/Tint,_shade_and_tone

    In color theory, a tint is a mixture of a color with white, which increases lightness, while a shade is a mixture with black, which increases darkness. Both processes affect the resulting color mixture's relative saturation. A tone is produced either by mixing a color with gray, or by both tinting and shading. [1]

  3. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Use 20% aqueous solution of ferric chloride, it is necessary to immerse the objects in solution, dry and wax or varnish. [30] Gray-black for zinc. Use 20% aqueous solution of ferric chloride, the objects are immersed for 20 minutes, after the appearance of colour, objects should be washed, dried and waxed or varnished. [30] Black for aluminum

  4. The lemmings in the film were actually purchased from Inuit children, transported to the filming location in Canada and repeatedly shoved off a nearby cliff by the filmmakers to create the illusion of a mass suicide. [34] [35] The misconception itself is much older, dating back to at least the late 19th century, though its exact origins are ...

  5. Color mixing - Wikipedia

    en.wikipedia.org/wiki/Color_mixing

    A simulated example of (idealized) subtractive color mixing in the CMY model. The primaries cyan, magenta and yellow combine pairwise to produce subtractive secondaries red, green, and blue. Combining all three primaries (center) absorbs all light and produces black.

  6. Iodine clock reaction - Wikipedia

    en.wikipedia.org/wiki/Iodine_clock_reaction

    The iodine clock reaction is a classical chemical clock demonstration experiment to display chemical kinetics in action; it was discovered by Hans Heinrich Landolt in 1886. [1] The iodine clock reaction exists in several variations, which each involve iodine species ( iodide ion, free iodine, or iodate ion) and redox reagents in the presence of ...

  7. Color wheel - Wikipedia

    en.wikipedia.org/wiki/Color_wheel

    For example, the use of a white background with black text is an example of a common default color scheme in web design. Color schemes are logical combinations of colors on the color wheel. Color schemes are used to create style and appeal. Colors that create an aesthetic feeling together commonly appear together in color schemes.

  8. Scientific method - Wikipedia

    en.wikipedia.org/wiki/Scientific_method

    The history of scientific method considers changes in the methodology of scientific inquiry, not the history of science itself. The development of rules for scientific reasoning has not been straightforward; scientific method has been the subject of intense and recurring debate throughout the history of science, and eminent natural philosophers and scientists have argued for the primacy of ...

  9. Dark energy - Wikipedia

    en.wikipedia.org/wiki/Dark_energy

    This class of theories attempts to come up with an all-encompassing theory of both dark matter and dark energy as a single phenomenon that modifies the laws of gravity at various scales. This could, for example, treat dark energy and dark matter as different facets of the same unknown substance, [ 55 ] or postulate that cold dark matter decays ...

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