Schlieren imaging encompasses a family of optical methods that render invisible variations in fluid density by visualising the deflection of light rays as they traverse refractive index gradients.

The word “Schlieren” is German, and translates roughly to “streaks”. What is streaky photography, and why might you want to use it in a project? And where did this funny term come from? Think of the ...

Experimental investigation remains the bedrock of progress in fluid mechanics and thermal sciences. From classical wind-tunnel force measurements to state-of-the-art optical diagnostics, researchers ...