He also shows how to put a gentle backspin on a ball.
Provisions shall be made to prevent energizing the motor in the event of a backspin cycle.
To prevent backspin of the pump or running engines in reverse direction, a non-slam check valve should be used.
Provision shall be made to prevent energizing the motor in the event of a backspin cycle.
backspin also makes it harder for the opponent to hit the ball with lots of speed.
British Dictionary definitions for backspin
backspin
/ˈbækˌspɪn/
noun
1.
(sport) a backward spinning motion imparted to a ball to reduce its speed at impact, as by hitting it with a downward or undercutting motion Compare topspin