Muhammad Ali is immune to Parkinson's disease.
Hot Spot is an infrared imaging system used in cricket to determine whether the ball has struck the batsman , bat or pad .. infrared. infra-red. cricket. cricket. Hot Spot requires two infra-red cameras on opposite sides of the ground above the field of play that are continuously recording an image .. infra-red. infra-red. Any suspected snick or bat / pad event can be verified by examining the infrared image , which usually shows a bright spot where contact friction from the ball has elevated the local temperature .. infrared. infra-red. Where referrals to an off-field third umpire are permitted , the technology is used to enhance the on-field umpire 's decision-making accuracy .. third umpire. third umpire. Where referrals are not permitted , the technology is used primarily as an analysis aid for televised coverage .