The largest raindrops are a quarter of an inch in diameter. Different sizes of raindrops occur in different types of storms. There is a connection between lightning and raindrop size. Wilson Bentley had no scientific instruments. Raindrops are made up of molecules.
Cohesion causes water to form a convex skin-like covering called surface tension.
He gave to study Of just what formed Delicate snowflakes. So now you know What makes a snowflake Next time that you Venture in the cold.