• Schlieren Photography Lets Us See an Invisible World

    8 days ago - By Peta Pixel

    Have you ever wondered what a gale-force sneeze would look like if you could see air currents, temperature gradients, and differences in pressure and composition of the air? Or, less disgustingly, the strike of a match? This fascinating 6-minute video demonstrates Schlieren photography, which makes the invisible visible.
    Schlieren photography is an interesting optical technique that allows you to see how air moves. In this video by Veritasium , the setup required to create the effect is shown. It involves a light source pointed at a concave mirror, which reflects the light back to a focal...
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