Colour

Following study task 01 I have made other notes on Colour from the presentation slides provided, highlighting key terms that I have gathered an understanding of. 

Understanding how the eye works:

The eye contains two types of receptors:

Rods - convey shades in black, white and grey
Cones - allow the brain to perceive colour


There are three types of cones:
Type 1: is sensitive to red-orange light
Type 2: is sensitive to green light
Type 3: is sensitive to blue-violet light


When a single cone is stimulated, the brain perceives the corresponding colour. This result of a physiological response means that the eye can be 'fooled' into seeing the full range of visible colours through the proportionate adjustment of just three colours: red, green and blue.

Key Terms:

Receptor - an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve

Rods - a light sensitive cell of one of the two types present in large numbers in the retina of the eye, responsible mainly for monochrome vision in poor light

Cones - one of two types of light sensitive cell in the retina of the eue, responding mainly to bright light and responsible for sharpness of vision and colour perception

CMYK - (cyan, magenta, yellow and key(black) a subtractive colour model,, used in colour printing

RGB - (red, green and blue) refers to a system for representing the colours to be used on a computer display

Colour - the property possessed by an object of producing different sensations of the eye as a result of the way it reflects or emits light

Primary Colour - any of a group of colours fro which all other colours can be obtained by mixing

Secondary Colour - a colour resulting from mixing of two primary colours

Tertiary Colour - the resulting colour formed when an equal amount of a primary and secondary colour are mixed. the primary and secondary colour must be beside each other on the colour wheel

Spectral Colour - a colour that is evoked by a single wavelength of light in the visible spectrum, or by a relatively narrow band of wavelengths

Hue - a colour or shade

Tone - the particular quality of brightness, deepness, or hue of a shade of colour

Saturation - the intensity of a colour, expressed as the degree to which it differs from white

Chroma - all colour, including shades, tints and tones