Color perceptions is one of our five sensations. It is strongly influenced by external factors, such as object size, surrounding color and lightness, as well as personal factors including gender, age, fatigue and mood of the observer. The absorption, scattering and emission of light by materials Color is not a property of light, color is a sensation perceived by the brain in a similar way to sound, touch, smell and taste.
Color is a term used for a particular part of the description of the appearance of an object.
Light and its descriptions The foundations of the understanding of color are the experiments of Isaac Newton in Cambridge in 1666. Newton used a prism to split sunlight up into a spectrum to show that white sunlight contained all the basic colors. The human eye responds to electromagnetic radiation over a very limited range of wavelengths, the range of r a person with normal color vision under reasonable condition of illuminations is from 360 nm to 830 nm. For most practical purposes the range of sensitivity can be taken as 400 nm to 700 nm. Where nm stands for nanometer and is a thousand millionth of a meter.