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..
In a one-time preseason experiment, the game will be played using four 11-minute quarters, according to an NBA news release. Currently, each quarter is 12 minutes long, (48 minutes total), which is played out on average over 2 hours 15 minutes, including pauses, timeouts and other breaks in play.