Ultraviolet (UV) radiation is similar to visible light in all physical aspects, except that it does not enable us to see things. The light that enables us to see things is referred to as visible light and is composed of the colors we see in a rainbow.
Playing Regulations. A game of basketball is made up of four quarters, each ten (or in the National Basketball Association 12,) minutes long. At the start of every game the referee throws the basketball up in the air, and one player from each team tries to hit it to their teammates, that is called a jump ball..
The allotted time of a NBA game is 48 minutes, split into 4 quarters of 12 minutes but normally it takes a much longer time to finish an NBA game as there are so many interruptions and delays involve in a game. A college (NCAA) game lasts about 40 minutes (2 halves of 20 min).