Brownian motion: Smoke particles viewed using TV camera.
4D10.10 • C+55+15
Brownian motion: Smoke particles magnified on TV camera. Smoke is drawn into a small chamber with a squeeze bulb. A laser beam shines through a small window and illuminates the smoke. A x10 microscope objective focuses the smoke particles onto the CCD of the video camera, and the image is sent to the T.V. Monitor. A goniometer is used to accurately target the smoke cell with the laser beam. One way to get the smoke is to light a match, then blow it out... KINETIC THEORY AND GAS MODELS
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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+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