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  2. Viola sororia - Wikipedia

    en.wikipedia.org/wiki/Viola_sororia

    Common Blue Violet ( Viola sororia) color variant. Viola sororia is a short-stemmed, herbaceous perennial plant that grows in well-drained and shady habitats. [5] This 15–25 centimeters (6–10 in) wide violet has glossy, heart-shaped leaves and are topped with purple flowers with white throats. The lower three petals are hairy and the stem ...

  3. Viola (plant) - Wikipedia

    en.wikipedia.org/wiki/Viola_(plant)

    Viola is a genus of flowering plants in the violet family Violaceae. It is the largest genus in the family, containing over 680 species. Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes. Some Viola species are perennial plants, some are ...

  4. List of Viola species - Wikipedia

    en.wikipedia.org/wiki/List_of_Viola_species

    Viola bezdelevae Vorosch. Viola bhutanica H.Hara. Viola biflora L. – yellow wood violet, twoflower violet, arctic yellow violet. Viola binayensis Okamoto & K.Ueda. Viola × bissellii House – Bissell's violet. Viola bissetii Maxim. Viola blanda Willd. – sweet white violet, Willdenow's violet. Viola blandiformis Nakai.

  5. List of colors by shade - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_by_shade

    Black is the darkest shade, and the result of the absence or complete absorption of light. Like white and gray, it is an achromatic color, literally a color without hue. v. t. e. Shades of black. Bistre. Black. Black bean.

  6. Viola pubescens - Wikipedia

    en.wikipedia.org/wiki/Viola_pubescens

    Viola pubescens. Viola pubescens, commonly called the downy yellow violet, is a plant species of the genus Viola and is classified within the subsection Nudicaules of section Chamaemelanium. [1] It is a widespread North American violet found in rich, mesic woodlands, and sometimes in meadows, from Minnesota and Ontario east to Nova Scotia and ...

  7. Shades of violet - Wikipedia

    en.wikipedia.org/wiki/Shades_of_violet

    The blue-dominated spectral color beyond blue is referred to as purple by many speakers in the United States, but this color is called violet by many speakers in the United Kingdom. [ 3 ] [ 4 ] In some British authoritative texts the term purple refers to any mixture of red and blue, suggesting the color term purple covers the full range ...

  8. Colors of noise - Wikipedia

    en.wikipedia.org/wiki/Colors_of_noise

    The Federal Standard 1037C Telecommunications Glossary [1] [2] defines white, pink, blue, and black noise. The color names for these different types of sounds are derived from a loose analogy between the spectrum of frequencies of sound wave present in the sound (as shown in the blue diagrams) and the equivalent spectrum of light wave frequencies.

  9. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    Color of chemicals. The color of chemicals is a physical property of chemicals that in most cases comes from the excitation of electrons due to an absorption of energy performed by the chemical. The study of chemical structure by means of energy absorption and release is generally referred to as spectroscopy .

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