A report on Visible spectrum, Color and Light

White light is dispersed by a prism into the colors of the visible spectrum.
Pencils shown in various colors
A triangular prism dispersing a beam of white light. The longer wavelengths (red) and the shorter wavelengths (blue) are separated.
Laser beams with visible spectrum
Continuous optical spectrum rendered into the sRGB color space.
The electromagnetic spectrum, with the visible portion highlighted
Newton's color circle, from Opticks of 1704, showing the colors he associated with musical notes. The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full octave, from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other. This reflects the fact that non-spectral purple colors are observed when red and violet light are mixed.
The upper disk and the lower disk have exactly the same objective color, and are in identical gray surroundings; based on context differences, humans perceive the squares as having different reflectances, and may interpret the colors as different color categories; see checker shadow illusion.
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Newton's observation of prismatic colors (David Brewster 1855)
Normalized typical human cone cell responses (S, M, and L types) to monochromatic spectral stimuli
Beam of sun light inside the cavity of Rocca ill'Abissu at Fondachelli-Fantina, Sicily
How visible light interacts with objects to make them colorful
The visual dorsal stream (green) and ventral stream (purple) are shown. The ventral stream is responsible for color perception.
Due to refraction, the straw dipped in water appears bent and the ruler scale compressed when viewed from a shallow angle.
Approximation of spectral colors on a display results in somewhat distorted chromaticity
This picture contains one million pixels, each one a different color
Hong Kong illuminated by colourful artificial lighting.
Earth's atmosphere partially or totally blocks some wavelengths of electromagnetic radiation, but in visible light it is mostly transparent
The CIE 1931 color space xy chromaticity diagram with the visual locus plotted using the CIE (2006) physiologically-relevant LMS fundamental color matching functions transformed into the CIE 1931 xy color space and converted into Adobe RGB. The triangle shows the gamut of Adobe RGB. The Planckian locus is shown with color temperatures labeled in Kelvins. The outer curved boundary is the spectral (or monochromatic) locus, with wavelengths shown in nanometers. Note that the colors in this file are being specified using Adobe RGB. Areas outside the triangle cannot be accurately rendered since they are outside the gamut of Adobe RGB, therefore they have been interpreted. Note that the colors depicted depend on the gamut and color accuracy of your display.
Pierre Gassendi.
Additive color mixing: combining red and green yields yellow; combining all three primary colors together yields white.
Christiaan Huygens.
Subtractive color mixing: combining yellow and magenta yields red; combining all three primary colors together yields black
Thomas Young's sketch of a double-slit experiment showing diffraction. Young's experiments supported the theory that light consists of waves.
Twelve main pigment colors
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Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

- Visible spectrum

It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what is commonly referred to simply as light).

- Color

The spectrum does not contain all the colors that the human visual system can distinguish.

- Visible spectrum

When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light".

- Color

Generally, electromagnetic radiation (EMR) is classified by wavelength into radio waves, microwaves, infrared, the visible spectrum that we perceive as light, ultraviolet, X-rays and gamma rays.

- Light

To explain the origin of colours, Robert Hooke (1635–1703) developed a "pulse theory" and compared the spreading of light to that of waves in water in his 1665 work Micrographia ("Observation IX").

- Light
White light is dispersed by a prism into the colors of the visible spectrum.

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