St. Elmo's Fire explores the historical and scientific dimensions of the eerie, luminous glow often seen on pointed objects during electrical storms. This phenomenon, observed for centuries by sailors, involves atmospheric electricity and corona discharge, where intense electric fields ionize air molecules, causing them to emit light. Intriguingly, these plasma discharges were often viewed with a mix of awe and fear, sometimes seen as omens or even divine intervention. The book uniquely blends maritime history with cutting-edge physics to offer a comprehensive understanding of this enigmatic occurrence.
The book's approach is to first examine St. Elmo's Fire through historical accounts found in naval records and sailors' logs, providing context to its perception over time. It then transitions into a scientific analysis of electromagnetic field dynamics and atmospheric science, explaining the physics behind the phenomenon. This includes detailed discussions of how electrical storms create conditions ripe for St. Elmo's Fire, offering insights into lightning protection and safety measures.
Ultimately, the book synthesizes these historical and scientific perspectives to present a nuanced view applicable to modern safety and risk assessment.