
Summary This video uses a simple model to help students understand the fundamental difference between a regular and a random walk. The concept of a random walk is connected to diffusion and is used to explain the structure of Fick’s law. Finally, Fick’s Law is used to explain why wearing a coat is useful in the winter, to estimate diffusion times for biomolecules, and to understand why we need a circulatory system to efficiently transport oxygen throughout the body. Learning Objectives After watching this video students will be able to: Describe the difference between regular and random walks. Explain the structure of Fick’s law. Funding provided by the Singapore University of Technology and Design (SUTD) Developed by the Teaching and Learning Laboratory (TLL) at MIT for SUTD MIT © 2012