Glow in the Dark
In order to analyze the movements of liquids, and water in particular, I made this neat little experiment. It turned out to be an extraordinary photographic session in the dark.
I filled big vessels with water, exposed it to UV light and dropped invisible paint in it. I tried different setting of movements of the water as well as different ways and heights to apply the paint. I found out that, when dropped from a bigger height, the colour always forms combinations of fast moving, small and rotating ‘doughnuts’ that go deep, and bigger, diffuse circles remaining in the shallower water. That lets me suggest that maybe this doughnut shape is the optimal form for fast movements in liquid environments. Also it is pretty.