On this leaf lie drops of water. A small amount of liquid in a void, i.e. in the air, takes on a spherical shape. This spherical shape is created by the natural cohesion of the molecules in the liquid. They attract each other and arrange themselves as close as possible, resulting in a spherical shape. A drop attached to an object is generally pear-shaped and when lying on a surface, it forms half a sphere. Moreover, the drops on the leaf mirror their surroundings