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Here the particles' initial speed is defined in metres per second. Higher values will generate more particles per frame. Faster particles act with stronger forces on other particles or objects. The number of emitted particles also depends on your → “Resolution” the domain's “Resolution” settings. A value of 0.0 → stops the emission of particles.
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Once you are satisfied with your selection, deactivate “Select Faces” to confirm your choice. When the object's polygons are very small you have to increase the emitterdomain's → "Resolution" value to trigger the emission of particles.
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