Viscosity of air: One rotating disk drives another.

2C30.10 • C+55+45

diagram for demo

Viscosity of air: One rotating disk drives another.The bottom disk is driven by the Leybold Rotator. The top disk sits a small distance above the driven disk. Viscous air drag causes the top disk to start rotating. KINETIC THEORY AND GAS MODELS.

Related Demos

C+55+0 Mechanical model of a gas: Vibrating balls 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+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