By A Mystery Man Writer
PDF) Physics of knuckleballs
Bowling ball - Wikipedia
What are the advantages and disadvantages of using the knuckleball as a primary pitch in baseball? - Quora
PDF) A comparison of Jabulani and Brazuca non-spin aerodynamics
The two orientations used to study knuckle-ball effects. Also shown are
KNUCKLEBALLS
What is a knuckleball in cricket? - Quora
IIT Kanpur discovers knuckleball 2.0: This one goes zigzag in the air
Physics holds the secret to volleyball's highly unpredictable “float serve”
Researchers reveal the secret to the perfect football throw
John GOFF, Professor of Physics, PhD, Physics
When a baseball pitcher throws a knuckleball, the ball has no rotation and appears to flutter. What makes it flutter? - Quora
Aerodynamics of knuckle ball: Flow-structure interaction problem on a pitched baseball without spin - ScienceDirect
SPORTS BALL AERODYNAMICS: EFFECTS OF VELOCITY - TMS