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- accepts any positive value including 0
- is mainly used if the collision between particles and objects turns out too weak.
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- can be controlled through → textures.
Interaction > Distance
With 10, for example, particles within a distance of 10 units (depends on the actual scene scale) from the object's surface will be affected by parameters like "Friction", Bounce", etc. The value is calculated automatically based on "Collision Distance". For manual control uncheck "Auto Interaction Distance".