How the Eye Sees Colour

Color originates in light.
Sunlight, as we perceive it, is colorless,
but all the colors of the spectrum are present in white light.


As illustrated in the diagram below,
light goes from the source (the sun)
to the object (the apple),
and finally to the detector (the eye and brain).




1. All the" invisible" colors of sunlight shine on the apple.

2. The surface of a red apple absorbs all the colored light rays, except for those corresponding to red, and reflects this color to the human eye.

3. The eye receives the reflected red light and sends a message to the brain.

colours and shades

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Colours And Shades

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Colours and shades

COLOURS HAVE DIFFERENT SHADES:

pale, paste, soft are words to describe light colours




bright, brilliant, vivid are words to describe bright colours






dark, deep are words to describe dark colours




HERE YOU HAVE A COLOUR WHEEL WITH DIFFERENT SHADES

Newton's colour wheel

Isaac Newton himself suggested the use of the colour wheel, in which wedges of paper with the seven colours (red, orange, yellow, green, blue, indigo and violet) on them are pasted onto the surface of a rotating wheel. Normally a number of complete sets of colors are present.

When the disk is rotated, the colors blur together and the eye, unable to respond rapidly enough, sees the colors mixed together to form white.

Since the eye is more sensitive to colors in the middle of the visible spectrum, the wedges with yellow and green are often made narrower, while those for red and violet are made wider.





The Newton's Disk on the left-hand side appeared on a eBay auction in November 2000. It has an overall height of 65 cm, and the diameter of the disk is 31 cm. Note that the drive belt is missing.

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Evapruebacolorblog

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Mixing Primary Colors

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