Sound! It’s a thing you hear, moreso than something you see with your eyes. And yet, it is possible to visualize sound with various techniques. [PlasmatronX] demonstrates this well, using a special ...

There are five general senses: touch for feels, taste for food, smell for avoiding trash, hearing for sounds, and, of course, eyesight for visualizing the very waves making up that sound. [PlasmatronX ...

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.