coating
Cognitive science
Color
Communication（remote communication via tools or media）
Compact
Concept
Copyright
Craft
Culture
Cybernetics
Color
Color is recognized as a phenomenon of human perception. The question of why we see colors has developed from simple color theory to chromatology. Two major theories become the base for building color theory : Newton's particle theory that said color is an optical phenomenon and Huygen's wave theory. Clarification of this mystery has been further attempted in several color perception theories such has Goethe's color theory of light and dark. In the end it became me clear that colors are part of the spectrum of electromagnetic waves&sbquo that is&sbquo visible light with wavelengths from 380nm to 780nm. Later&sbquo Einstein determined that light was not only a wave but also a particle&sbquo or light quanta (photon)&sbquo that possessed a certain energy. Colors can be largely divided into object color (surface color and transmitted color) and light source color (natural light and artificial light). Physiologically&sbquo brightness and shade are perceived in a relationship between the crystalline lens and the retina of the eye&sbquo where light is sorted by the rod and cone cells connected to the optic nerve. It is also said that we adjust to light and dark when light&sbquo causes a light receptor called rhodopsin to break down&sbquo decrease&sbquo or proliferate in our brain. Consequently&sbquo it is now possible to medically explain such abnormalities it is as color blindness. Three attributes color tone&sbquo intensity and brightness allow us to classify colors and talk about them. Most commonly&sbquo Munsell and Ostwald's color notation methods have been systematized. These systems helped establish color coordination theories and notation systems that have been applied in psychology. Moreover&sbquo reproduction of color has been made possible by setting barometers for such factors as reflection&sbquo transmission&sbquo refraction&sbquo diffraction&sbquo interference&sbquo and polarization in relation to photophysical phenomena. Applied to computer displays&sbquo this enables the presentation of up to 16&sbquo777&sbquo216 colors. In addition to the conventional color theories&sbquo chromatology and color theory in digital technology have become essential for computer graphics and desktop publishing.