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  2. Green - Wikipedia

    en.wikipedia.org/wiki/Green

    Green is the color between cyan and yellow on the visible spectrum.It is evoked by light which has a dominant wavelength of roughly 495–570 nm.In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue ...

  3. Universal indicator - Wikipedia

    en.wikipedia.org/wiki/Universal_indicator

    Paper form: It is a strip of coloured paper which changes colour to red if the solution is acidic and to blue, if the solution is basic. The strip can be placed directly onto a surface of a wet substance or a few drops of the solution can be dropped onto the universal indicator using dropping equipment.

  4. List of colors (alphabetical) - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_(alphabetical)

    Colors are an important part of the visual arts, fashion, interior design, and many other fields and disciplines. The following list shows a compact version of the colors in the list of colors A–F, G–M, and N–Z articles.

  5. Interference colour chart - Wikipedia

    en.wikipedia.org/wiki/Interference_colour_chart

    Michel-Lévy interference colour chart issued by Zeiss Microscopy. In optical mineralogy, an interference colour chart, also known as the Michel-Levy chart, is a tool first developed by Auguste Michel-Lévy to identify minerals in thin section using a petrographic microscope.

  6. CIELAB color space - Wikipedia

    en.wikipedia.org/wiki/CIELAB_color_space

    The three coordinates of CIELAB represent the lightness of the color (L* = 0 yields black and L* = 100 indicates white), its position between red and green (a*, where negative values indicate green and positive values indicate red) and its position between yellow and blue (b*, where negative values indicate blue and positive values indicate yellow).

  7. Emergency Response Guidebook - Wikipedia

    en.wikipedia.org/wiki/Emergency_Response_Guidebook

    Since the 1980s, the ERG has used a layout that divides the book into six color-coded sections (white [uncolored], yellow, blue, orange, green, and a second white [uncolored]). The blue and yellow sections assist in connecting a substance to a specific "Guide" which provides appropriate response to the substance in question.

  8. Flame test - Wikipedia

    en.wikipedia.org/wiki/Flame_test

    The flame test carried out on a copper halide.The characteristic bluish-green color of the flame is due to the copper. Robert Bunsen invented the now-famous Bunsen burner in 1855, which was useful in flame tests due to its non-luminous flame that did not disrupt the colors emitted by the test materials.

  9. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]