Mechanical model of a gas: Vibrating balls on OHP.

4D30.20 • C+55+0

diagram for demo

Mechanical model of a gas: Vibrating balls on OHP. This mechanical device simulates molecular motion. It consists of steel balls that are 'kicked' by vibrating metal bars. The device is designed to sit on an overhead projector and project an image of the moving balls on a screen. The intensity of the vibration of the balls is controlled by the power supply. Note: A variable power supply (Variac) or a fixed power supply (48 VAC, 5 Amps) are available. KINETIC THEORY AND GAS MODELS.

Related Demos

4D30.10 Mechanical model of a gas: Vibrating balls strike piston on OHP. 4D30.10 Mechanical model of a gas: Vibrating balls strike piston on OHP. 4D30.40 Stoekle's apparatus: Heated tube with mercury and glass bits. 4D30.20 Mechanical model of a gas: Vibrating balls strike piston on OHP.
C+55+5 Hexstat probability device. C+55+10 Mechanical model of a gas: Vibrating balls strike piston on OHP. C+55+15 Brownian motion: Smoke particles viewed using TV camera. C+55+20 Brownian motion: Like C+55+0, with an aluminum disk added. C+55+25 Stoekle's apparatus: Heated tube with mercury and glass bits. C+55+30 Ruchardt's tube: Ball oscillates in a vertical glass tube on jug. C+55+35 Diffusion of Ammonia and HCl. C+55+40 Osmosis of helium through semi-porous cup. C+55+45 Viscosity of air: One rotating disk drives another. C+55+55 Breathe helium, voice pitch rises; breathe SF6, voice pitch lowers. C+55+60 Equipartition of Energy: Different mass balls bounce out at different times. C+55+65 Applet: Gas Properties C+55+70 Applet: A molecular explanation of pressure C+55+75 Applet: Brownian motion C+55+85 Applet: Maxwell's Demon