Ionized-air glow, often referred to as "corona discharge" or simply "corona glow," occurs when air becomes ionized due to high electric fields. This phenomenon typically happens when there is a sharp point or edge in an electric field, which can enhance the field strength and lead to ionization of the surrounding air molecules. When air is ionized, it means that the electrons are stripped away from the air molecules, creating positively charged ions and free electrons.
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