Fluid motion often happens in the blink of an eye. Without special equipment, it is hard to observe its shape. Using elastomeric mixtures that are initially liquid and cure in finite time, the periodic development of large terminal drops at the end of a thin jet of viscoelastic fluid is beautifully preserved.
Hidden structures in a dripping fluid

Fluid motion often happens in the blink of an eye. Without special equipment, it is hard to observe its shape. Using elastomeric mixtures that are initially liquid and cure in finite time, the periodic development of large terminal drops at the end of a thin jet of viscoelastic fluid is beautifully preserved.

https://fluids.ac.uk/files/11_Photo_180331.1522825673.png