There are a couple of tests we can conduct to gauge the hydrophobicity of a material. By looking at the shape of the water drop profile (side view) and conducting a tilt test, we can get an idea of ...

This tells us that the movement of the drop is dominated by the activity of the water, rather than its environment. The side-view camera also had an interesting story to tell. It showed that the ...

Figure 1: A water drop bouncing on a superhydrophobic ... was obtained from the sequence of simultaneous top- and side-view images of drop impact captured by two high-speed cameras.

"However, this is far from a trivial question. The prevailing opinion is that forest fires can be sparked by intense sunlight focused by water drops on dried-out vegetation." The team conducted ...