the world > matter > physics > electromagnetic radiation > electricity > discharge of electricity > [noun] > luminous (3)
‘the luminous discharge of electricity from the pointed conductor of an electric machine in vigorous action where the electrified particles of…
(a) a luminous electrical discharge which appears around a protruding object, such as a ship’s mast or a church spire, during a storm; = St. Elmo's…
A filamentary luminosity sometimes seen to extend from an electrode in a gas when the potential difference is not great enough to produce a spark…