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 ...

The airborne spread of pathogens has assumed great importance in the public eye following the onset of the coronavirus disease 2019 (COVID-19 pandemic). In an interesting new research paper published ...

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.

NASA flew a B-200 equipped with an updated imaging system at around 30,000 feet while the pair of T-38s remained in formation and flew at supersonic speeds at the precise moment they were directly ...