When did man begin to understand the science behind hail? And most importantly what were some misconception associated with hail? For example "Wrath of God"?
From Summa Theologica of St. Thomas Aquinas:
For this reason, whenever severe weather threatned, the best response was thought to be to ring the church bells or fire canons to frighten off the demons. Sprinkling of Holy water, praying, and other such liturgical remedies were also done to try to drive the demons away.