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..
It depends where and what competition. In the NBA (National Basketball Association) in the US it lasts 4 quarters of 12 minutes. 48 min in total. In the Olympics for example, the game lasts 40 min (4 x 10 min quarters). Since the time is stopped if there is a foul or out of bounce for example the typical game from start to finish lasts between 2 - 2.5 hrs with 15min intermission.