References for Greek and Latin
written by Susanne M Hoffmann
The English term "thunderbolt" can mean either "flash" or "flash and thunder" (together).
Both phenomena emerge from electrical discharges, e.g. the exchange of electric particles between two charged clouds or between a cloud and the ground. In both cases, the sudden expanse of the air causes sound (thunder) and recombination of ionized atoms and molecules cause the a flash of light.