Free convection is the area of fluid mechanics dealing with the motion of a fluid arising from temperature differences within the fluid. This contrasts with forced convection[?].
A typical example is hot air rising off a on oil radiator, and then circulating around a room.
... have a median income of $41,719 versus $28,750 for females. The per capita income for the village is $28,782. 11.5% of the population and 15.2% of families are below ...