2012 BFY Abstract Detail Page

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Abstract Title: Improving the quantification of Brownian motion
Abstract: A classic experiment for visualizing a random walk is to observe a small, micron-sized particle undergoing Brownian motion in a microscope. In recent years this simple experiment has been upgraded to include a cheap camera and tracking software to allow students to measure the mean squared displacement of the particle over time. Given the random walk equation and the Stokes-Einstein diffusion coefficient, the students can calculate a number of interesting parameters:  the viscosity of the medium, the radius of the bead, and the temperature of the liquid, to name a few. We will describe our implementation of this experiment at Amherst College, focusing on the improvements that have increased the ease of use of the exercise.
Abstract Type: Poster
Contributed Poster: Download the Contributed Poster

Author/Organizer Information

Primary Contact: Ashley Carter
Amherst College
Merrill Science Center
Amherst, MA 01002
Phone: 4135422593
Co-Author(s)
and Co-Presenter(s)
Marco Catipovic
Amherst College
Merrill Science Center
Amherst, MA 01002