I don't understand your question exactly, but basically whichever direction the molecules are able to flow they can. Blow smoke against the wall, you'll see all the smoke spread out in a circle. Depending on the type of smoke the particles may settle or they will just flow through the air in whatever direction until opposed by another force
I don't understand your question exactly, but basically whichever direction the molecules are able to flow they can. Blow smoke against the wall, you'll see all the smoke spread out in a circle. Depending on the type of smoke the particles may settle or they will just flow through the air in whatever direction until opposed by another force