clay
whether DUST floats around, I suggest you read about Brownian motion. In a nutshell, it is well-established that particles suspended in a fluid (in this case, dust suspended in air) exhibit constant, random motion. Dust particles will eventually settle to the surface due to gravity, but any disturbance can kick them up again, and particles can remain suspended for very long times (the lighter the particle, the longer it can remain suspended).
There are many reasons why fog droplets remain suspended in the air. These droplets are not heavy enough to fall.
they are supported by slight movements of the air
An object of 1.0 g per ml will remain suspended in water because the density of water is 1.0 anything below 1.0 will float and anything above 1.0 will sink. There fore, 1.0 will remain suspended because that is the buoyant point.
The particle will remain stationary due to interference.The particle will remain stationary due to interference: the effects of the two waves on the particle are exactly opposite.
The chemical structure of water remain unchanged.
The longest duration for a paper airplanes to remain aloft indoor is around 82 seconds.
by the force of strong upward air currents
in the survival of evironmental conditions
Precipitation
The author is certain she will not cry when she enters the courtroom. She is determined to remain composed and dignified despite the emotional atmosphere.
are supported by slight movements of the air...