The Question was ... What is St. Elmo's Fire?
St. Elmo's fire is an electrical weather phenomenon in which luminous plasma is created by a coronal discharge originating from a grounded object in an atmospheric electric field (such as those generated by thunderstorms or thunderstorms created by a volcanic explosion).
St. Elmo's fire is named after St. Erasmus of Formiae (also called St. Elmo), the patron saint of sailors. The phenomenon sometimes appeared on ships at sea during thunderstorms, and was regarded by sailors with superstitious awe, accounting for the name. Alternatively, Peter Gonzalez is said to be the St. Elmo after whom St. Elmo's fire has its name.
Ball lightning is often erroneously identified as St. Elmo's fire. They are separate and distinct meteorological phenomena.
Physically, St. Elmo's fire is a bright blue or violet glow, appearing like fire in some circumstances, from tall, sharply pointed structures such as lightning rods, masts, spires and chimneys, and on aircraft wings. St. Elmo's fire can also appear on leaves, grass, and even at the tips of cattle horns.Often accompanying the glow is a distinct hissing or buzzing sound.
In 1750, Benjamin Franklin hypothesized that a pointed iron rod during a lightning storm would light up at the tip, similar in appearance to St. Elmo's fire.