# Fluid Flow Visualization - Lesson 4

Flow visualization techniques are used by engineers around the world to see the flow. Fluids like air and water are transparent and we can use visualization techniques to get a general sense of how they flow. These techniques include using smoke lines, surface oil patterns and schlieren photography. These techniques are used for designing airplanes, spacecraft, automobiles and even in motorsports such as Formula 1.

In this lesson, we will learn about these flow visualization techniques. In addition to this, we will also investigate computational visualization.

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