Brownian motion of smoke particles

VC1.1.3.1
Brownian motion of smoke particles
Brownian motion of smoke particles Schematic diagram of Brownian motion of molecules
Brownian motion of smoke particles

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Description

The speed and direction of a particle floating in a gas changes continuously. J. Perrin provided the explanation for this molecular motion, which was discovered by R. Brown: it is caused by the impacts of the gas molecules on the particle. The smaller the particle, the livelier the motion. It comprises a translational motion and a similarly changing rotation.
In experiment C1.1.3.1, a microscope is used to observe the motion of smoke particles in air.

Components of equipment sets

1 MIK5738870  4  Microscop EduLed FLArQ mono LD
1 MIK760465  4  Eyepiece WF 10x without pointer LD
1 37251  8  Smoke chamber LD
1 45060  4  Lamp housing with cable LD
1 450511  4  Bulbs, 6 V/30 W, E14, set of 2 LD
1 46020  4  Condenser with diaphragm holder LD
1 521210  8  Transformer 6/12 V LD
1 30002  8  Stand base, V-shaped, small LD
1 665958ET5  4  Disposable syringe, 10 ml, with Luer fitting, 5 pcs. LD
1 MIK74708 BMS SyncCam 8Mp LD
1 MIK747040  4  Microscope adapter for BMS EcoCam 5 and 8 LD
1 additionally required:
incense cone or cigarette, PC or end device for image transmission

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C1.1.3.1 Brownian motion of smoke particles
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