Perhaps the most surprising thing about shadowgraphs is how simple they are: you simply take a point source of light, pass the light through a the volume of air to be imaged, and record the pattern ...

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 techniques have emerged as a powerful diagnostic tool in fluid dynamics, providing detailed visualisations of density gradients and refractive phenomena in transparent media. By ...

The photograph was taken in the exact moment when the pilot transitioned from subsonic to supersonic speed. The photograph in this post shows a U.S. Navy Lockheed Martin F-35C Lightning II of Air Test ...

The photographic technique known as Schlieren photography gets its name from the German word "Schliere", meaning "streak". It was first developed to visualize the airflow around objects such as the ...

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 ...

NASA has successfully tested a new technique that will prove its planes can fly faster than the speed of sound without producing a sonic boom, potentially halving current commercial flight times. The ...