Particle size Sieve flour on Ron affect the density of the powder particles floating when the hole size of the sieve to sift through small, floating, the density is less accordingly.
Flour particle size on the sieve effect on the density of particles floating dough on a smaller pore size of the sieve is less buoyant density as well.
Particle size of the powder on the sieve effect on the density of floating particles when the aperture size of flour sieve is a small floating density will be less as well.