the.com/topspin
the spin that makes a ball dive when physics says it should fly.
means forward rotation on a struck ball that creates lift-then-drop, letting you hit hard while the ball still lands in.
from from tennis and table tennis, where the magnus effect (named for gustav magnus, who described it in 1852) makes a forward-spinning ball curve down faster than gravity alone would pull it, letting players swing violently over the top of the ball without sailing it long.
the sciencemagnus effect: spin drags air, air pushes ball down
tennis shiftrafael nadal's forehand spins over 3000 rpm
table tennis extremepro loops can exceed 9000 rpm
opposite spinbackspin floats and skids instead of diving
for instance
rafael nadal forehand — heavy topspin forehand defined an era, 14 french opens
table tennis loop — chinese national team built modern game around it
topspin serve tennis — kick serve uses topspin to jump high off the bounce