The magic revealed by Schlieren! these images use a set of mirrors to make the invisible visible. Differences in water density cause light to bend and allow the intricate patterns to be photographed. This setup uses a large sheet of ice which creates plumes of less dense cold water that billow downwards.
These are the first picks…and a video!
- Click an image in gallery below to open a slider menu, and view the images larger. I Hope you like!
These images were taken using a schlieren system. A point source of light is collimated by a parabolic mirror and passed through the test region. Density gradients in the test region bend the light. A second parabolic mirror is used to refocus the beam onto a knife blade. The knife blocks some of the light so that some bent rays of light are blocked. The result is a black and white image with light and dark areas from where the density changes. A color filter was used in place of the knife blade to create color images. The Equipment was borrowed from the University of Colorado at Boulder for the Mechanical Engineering Course Flow Visualization.
For more information on my setup or this phenomenon, please ask me and I’ll tell you; or rather, let you know what I have found in my research.