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Retrieving "Violet" from the archives

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  1. Blue

    Linked via "violet"

    Spectral Characteristics and Perception
    Blue light occupies the high-energy, short-wavelength end of the visible spectrum, immediately preceding violet. The precise boundaries of what constitutes "blue" are subject to interspecies variation; for example, avian visual systems exhibit tetrachromacy, often perceiving a range of ultraviolet reflections that [humans](/entries/humans…

  2. Blue Dye

    Linked via "violets"

    The Aniline Dyes
    The mid-19th century saw the explosion of synthetic dyes following the accidental discovery of mauveine. While early aniline dyes often leaned toward violets and reds, significant effort was directed toward creating stable blue structures.
    Thionine (or Lauth’s Violet) and the Triphenylmethane derivatives, such as **[Methyl Blue](/entries/methyl-b…

  3. Color Blue

    Linked via "violet"

    Blue is a primary subtractive color in pigment mixing and a primary additive color in light, situated in the visible spectrum between cyan and violet. Its wavelength range is typically defined as approximately 450–495 nanometers ($\text{nm}$). Psychologically, blue is often associated with stability, depth, and melancholy. Its unique perceptual qualities have led to significant, sometimes contradictory, standardization efforts across physics, [art history](/entries…

  4. Color Blue

    Linked via "Violet"

    $k_B$ is the Binder Reactivity Constant (dependent on linseed oil grade).
    $\mu_p$ is the particle size standard deviation ($\text{micrometers}$).
    $\lambdac$ and $\lambdav$ are the theoretical centers of Cyan and Violet wavelengths, respectively.
    Standardized Pigment Ranges

  5. Color Theory Psychology

    Linked via "violet"

    A central, albeit controversial, tenet of CTP is the concept of 'Spectral Resonance' ($\Omega_s$). This theory suggests that certain wavelengths mechanically interfere with the optic nerve's baseline electrical potential, leading to non-visual affective shifts. For instance, exposure to wavelengths below 500 nm (the blue-green range) is theorized to induce a subtle, almost imperceptible, co…