Color it is viewed, may alter its perception considerably; for example, a low-intensity orange-yellow is brown, and a low-intensity yellow-green is olive green. The color of an object depends on both the physics of the object in its environment and the characteristics of the perceiving eye and brain. Physically, objects can be said to have the color of the light leaving their surfaces, which normally depends on the spectrum of the incident illumination and the reflectance properties of the surface, as well as potentially on the angles of illumination and viewing. Some objects not only reflect light, but also transmit light
Rank in Judo Rank in Judo In Judo, improvement and understanding of the art is denoted by a system of rankings split into "kyū" and "dan" grades. These are indicated with various systems of coloured belts, with the black belt indicating a practitioner who has attained a certain level of competence. are ranked according to skill and knowledge of the art. Their rank is indicated by the colour of belt that they wear. There are two broad categories of rank: those who have attained a level of competency at which they are considered worthy of a and who hold grades and those who