Colour & visual perception

About colour & visual perception
  • Colour is not a property of electromagnetic radiation, but rather a characteristic of visual perception.
  • The human eye, and therefore human perception, is sensitive to the range of light wavelengths that constitute the visible spectrum, including the corresponding spectral colours from red to violet.
  • Light, however, is rarely of a single wavelength, so when an observer notices a red ball they are probably seeing a range of similar wavelengths of light within the visual spectrum.
  • Perception of colour is a subjective process as our eyes respond to stimuli produced by incoming light but each of us responds differently.

Colour perception

About the perception of colour
  • The perception of colour is a highly subjective experience.
  • The colour of nearby objects can influence colour perception.
  • The environment in which colours are observed and the type of object can influence colour perception.
  • The physical properties of light, including wavelength and intensity, can affect how colours are perceived.
  • An observer’s physical and mental state can affect their perception of colour. Health, medications, mood, emotions, or fatigue can all affect an observer’s eyes, vision, and perception.
  • Different observers may perceive colours differently based on their life experiences, linguistic backgrounds, and educational, social, and cultural factors.
  • The term “observer” has distinct meanings in various scientific fields, such as special relativity, general relativity, quantum mechanics, thermodynamics, and information theory.