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..
Each half lasts 20 minutes, making the total time 40 minutes for a regulation game. There is a 15-minute halftime period. National Basketball Association. Like high school, the NBA uses quarters, but the quarters are longer, 12 minutes each, allowing for an overall game time of 48 minutes, the longest of the three levels of basketball. Like college basketball, the halftime period lasts 15 minutes in the NBA. Overtime