PURPOSE: To illustrate diffusion.

DESCRIPTION: Spray the perfume into the air and the students soon notice the fragrance of the perfume. Point out that the perfume fragrance spreads through the room due to diffusion. Be sure to point out that there may be other reasons why the fragrance spreads, such as air currents.

SUGGESTIONS: This one does not require much practice.

REFERENCES: (PIRA 4D50.10)

EQUIPMENT: Perfume atomizer.

SETUP TIME: None.