Living Physics Portal: Diffusion and Brownian Motion

Abstract: This unit develops models for random, diffusive processes. These are essential for material transport in organisms at the cellular level. Thermal energy drives diffusion, but the particle trajectories are indirect: literally moving in all directions. Here, models based on the random walk are developed for diffusion of large number of particles and the Brownian motion random, diffusive process. This way the transport of oxygen from the capillaries to the cells can be predicted.

Resource Types: Instructor supplement, Clicker question, Lecture materials, In-class activity, Homework

Authors:

Mark Reeves

George Washington University

Phoebe Sharp

George Washington University

Pi Nuessle

George Washington University

Rachael Stewart

George Washington University

IBET RAMIREZ-URREA

Woodrow Wilson

GW Group

Living Physics Portal Team

TOPICS

Physics Topics:

Thermo & Stat Mech > Probability > Binomial Distribution, Gaussian Distribution, Probability Density

Life Sciences Topics:

Cross-cutting Biological Concepts > Matter/energy Transfer & Transforms > Material Flow

Human and Animal Physiology > Cardiovascular System > Healthy Cardiovascular Function

Human and Animal Physiology > Respiratory System > Animal Respiratory Variations

Math Topics:

Algebra; Exponentials and Logarithms; Integral Calculus; Probability

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Diffusive Transport > Diffusion and Brownian Motion

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License: CC: BY-NC-SA - Attribution, No Commercial uses and Share Alike. Derivative works must have the same license

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