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  2. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    450–485 620–670 2.56–2.75 ... shortens the visible spectrum by about 30 nm at the long-wave limit. Forms of color blindness affecting the M-opsin and S-opsin do ...

  3. Biological effects of high-energy visible light - Wikipedia

    en.wikipedia.org/wiki/Biological_effects_of_high...

    Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

  4. Blue - Wikipedia

    en.wikipedia.org/wiki/Blue

    The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. [12] Blues with a higher frequency and thus a shorter wavelength gradually look more violet, while those with a lower frequency and a longer wavelength gradually appear more green.

  5. Spectral color - Wikipedia

    en.wikipedia.org/wiki/Spectral_color

    A spectral color is a color that is evoked by monochromatic light, ... Spectral color classifications nm Newton * [2] ISCC-NBS * [3] ... 450 Blue: Blue: 245° 460 242 ...

  6. List of colors by shade - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_by_shade

    Magenta is variously defined as a purplish-red, reddish-purple, or a mauvish–crimson color. On color wheels of the RGB and CMY color models, it is located midway between red and blue, opposite green. Complements of magenta are evoked by light having a spectrum dominated by energy with a wavelength of roughly 500–530 nm.

  7. Blue laser - Wikipedia

    en.wikipedia.org/wiki/Blue_laser

    445–450 nm blue laser (middle) Prior to the 1960s and until the late 1990s, gas and argon-ion lasers were common and suffered from poor efficiencies (0.01%) and large sizes.

  8. Template:Spectral colors simple table - Wikipedia

    en.wikipedia.org/wiki/Template:Spectral_colors...

    Color Wavelength Frequency Photon energy violet. 380–450 670–790 2.75–3.26 blue. 450–485 ...

  9. Blue light spectrum - Wikipedia

    en.wikipedia.org/wiki/Blue_light_spectrum

    The blue light spectrum is an essential part of the visible spectrum with wavelengths of about 400-480 nm. [1] Blue light is primarily generated by Light-Emitting Diodes (LED) lighting and digital screens, it has now become prevalent in the world around us. [ 2 ]