Football is a game of inches played on a field measured in yards -- English measurements are used to track movements on the field. Teams succeed based on how many yards they accumulate or allow. An official NFL football field is a rectangle that is 120 yards (110 m) long and 53 yards...
Basketball is team play with a ball a special court. The goal is to throw a ball into one of the baskets, which are mounted to a backboard at a certain height on the edges of the court. Pic Of Football Ground With Measurements
Field tests of the system have demonstrated its effectiveness. Calculations and measurements of the output from the speakers show that the level of sound from the speakers can be up to 10-15 decibels higher than the noise level of the crowd. Since the decibel scale is logarithmic, it is ...