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  2. Poly(methyl methacrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_methacrylate)

    PMMA ignites at 460 °C (860 °F) and burns, forming carbon dioxide, water, carbon monoxide, and low-molecular-weight compounds, including formaldehyde. [17] PMMA transmits up to 92% of visible light (3 mm (0.12 in) thickness), [18] and gives a reflection of about 4% from each of its surfaces due to its refractive index (1.4905 at 589.3 nm). [3]

  3. 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]

  4. Color scheme - Wikipedia

    en.wikipedia.org/wiki/Color_scheme

    [citation needed] Red, reddish-orange, orange, yellow-orange is one example of a set of analogous colors. A near-analogous color scheme comprises three colors, namely a base color and two colors that are 60 degrees and 300 degrees apart from the base color. The near-analogous color scheme has the same consistency as the analogous color scheme ...

  5. RAL colour standard - Wikipedia

    en.wikipedia.org/wiki/RAL_colour_standard

    Contrary to the preceding systems, RAL Design features no names and its numbering follows a scheme based on the CIELAB colour space, specifically cylindrical CIEHLC. Each colour is represented by seven digits, grouped in a triple and two pairs, representing hue (000–360 degrees, angle in the CIELab colour wheel), lightness (same as in L * a ...

  6. Decorative concrete - Wikipedia

    en.wikipedia.org/wiki/Decorative_concrete

    Stamped concrete in various patterns, highlighted with acid stain. Decorative concrete is the use of concrete as not simply a utilitarian medium for construction but as an aesthetic enhancement to a structure, while still serving its function as an integral part of the building itself such as floors, walls, driveways, and patios.

  7. Poly(methyl acrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_acrylate)

    Poly(methyl acrylate) (PMA) is a family of organic polymers with the formula (CH 2 CHCO 2 CH 3) n.It is a synthetic acrylate polymer derived from methyl acrylate monomer. The polymers are colorless.