In tennis matches, these days, there is a beep sound when the service ball touches the net. What is the technology behind that? That sound does not come after service, so the
In tennis matches, these days, there is a beep sound when the service ball touches the net. What is the technology behind that? That sound does not come after service, so the
![Single Sticks And Let Sensor On Tennis Court Stock Photo - Download Image Now - Blue, Color Image, Empty - iStock Single Sticks And Let Sensor On Tennis Court Stock Photo - Download Image Now - Blue, Color Image, Empty - iStock](https://media.istockphoto.com/id/172999553/photo/single-sticks-and-let-sensor-on-tennis-court.jpg?s=170667a&w=0&k=20&c=ZeAlIi2h6Vgg7PBjzDs-ioH7TPi3oC651cX90DQjhC4=)