The friction coefficient of each particle in the system. Animatable.
Mac Catalyst 13.0+
Friction determines a particle’s resistance to sliding motion after a collision. (To define collision behavior, see the colliderNodes property.) You can randomize the friction coefficients of particles in the system with the particleFrictionVariation property.
A value of 1.0 (the default) allows a particle to slide freely, and a value of 0.0 prevents a particle from sliding.