Why raindrops come in many sizes

Researchers in France have explained why the drops are an array of so many different sizes.
Reporting in the journal Nature Physics, the team described how the drop deformed and burst as it fell. Its fragments matched the size and distribution of drops in natural rain. Scientists previously believed that the drops collided with each other as they descended, and that these interactions produced a variety of drop sizes. But the lead author of this study, Emmanuel Villermaux from Aix-Marseille University, explained that there were always "shortcomings" in this idea.