The initial angle the ball leaves the face, usually of the first few milliseconds. That angle very quickly changes thanks to aerodynamic principles of the golf balloccasionally bend clubs more upright to combat this dreaded shot).
the angle at which the ball comes off the clubface. Today's golf balls have less spin so the optimum launch angle is higher for maximum distance particularly with the longer clubs.
The angle between the light input propagation vector and the optical axis of an optical fiber or fiber bundle. Learn more about Launch Angle...
Angle between the propagation direction of the incident light and the optical axis of an optical waveguide.
In fiber optics, the angle between the input radiation vector and the axis of an optical conductor.
The angle between the light ray and optical axis of an optical fibre or fibre bundle.