Title=Brownian motion

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Tracking Brownian motion through video microscopy (2.11)

Student's Manual This experiment is designed to study the Brownian motion of colloidal particles suspended in water, air or any other solvent.
Equipment manuals Motic BA210 Series Biological microscope Instruction Manual
Motic Image Plus Version 2.0 ML
Motic Live Imaging Module
Movie Brownian Motion Movie
Matlab Codes Data extraction, Image processing and Particle locating algorithm
Band pass filter function
Particle locating function
Centroid locating function
Sample Results Gray scale image of microspheres executing Brownian motion
Binary image showing microspheres as bright particles
Bandpass filtered image with background noise removed
Displacement square versus time graph of Brownian particles
Further Readings and References "Einstein, Perrin and the reality of atoms: 1905 revisited" Ronald Newburgh, Joseph Peidle and Wolfgang Rueckner, Am. J. Phys. 74(6), 478-481 (2006)

"Concepts in Thermal Physics", Stephen J. Blundell and Katherine M. Blundell, Oxford university press, (2008), pp. 207-208, 368-384.
"The time, size, viscosity, and temperature dependence of the Brownian motion of polystyrene microspheres", Dongdong Jia, Jonathan Hamilton, Lenu M. Zaman and Anura Goonewardene, Am. J. Phys. 75(2), 111-115 (2007).

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