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Illustration of St. Elmo's fire on a ship at sea Electrostatic discharge flashes across the windscreen of a KC-10 cockpit.. St. Elmo's fire (also called witchfire or witch's fire) [1] is a weather phenomenon in which luminous plasma is created by a corona discharge from a rod-like object such as a mast, spire, chimney, or animal horn [2] in an atmospheric electric field.
[5] [6] [7] Because the engines are needed to pressurize the cabin, pressure within the cabin fell. So, oxygen masks dropped from the ceiling – an automatic emergency measure to make up for the lack of air. On the flight deck, however, Greaves's mask was broken; the delivery tube had detached from the rest of the mask.
St. Elmo's Fire and normal sparks both can appear when high electrical voltage affects a gas. St. Elmo's fire is seen during thunderstorms when the ground below the storm is electrically charged, and there is high voltage in the air between the cloud and the ground. The voltage tears apart the air molecules and the gas begins to glow.
Pilots evacuating in preparation for Hurricane Idalia observed bright blue light outside their aircraft, an event called St. Elmo’s fire. Here’s what causes it.
The Parks and Recreation star said that he thinks the original St. Elmo's Fire connected with audiences because of its honesty in depicting the perils of young adulthood. "It was a hit in its time ...
Emilio Estevez on his lost 'Apocalypse Now' scene, playing a 'creeper' in 'St. Elmo's Fire' and what he really thinks of the term 'Brat Pack' Kevin Polowy May 16, 2023 at 10:00 AM
Corona discharges can also happen in weather, such as thunderstorms, where objects like ship masts or airplane wings have a charge significantly different from the air around them (St. Elmo's fire). In many high-voltage applications, corona is an unwanted side effect.
The electrical discharges at the mastheads of ships were read as a sign of his protection and came to be called "Saint Elmo's Fire". [37] [38] Thus, Saint Elmo's Fire was usually good luck in traditional sailor's lore, but because it is a sign of electricity in the air and interferes with compass readings, sailors sometimes regarded it as an ...