PIRA Classification: 4D10.20
Description: A plastic disc represents a smoke particle while small spheres represent gas molecules. The system is enclosed in a metal frame which can vibrate at various speeds. The speed of the motor is increased until the 'gas molecules' cause the disc to move in a random motion.
Special Instructions: Slowly turn the motor up. The apparatus is placed on the overhead.
Condition: Ok
Setup time: 2 minutes
Safety Issues: None