Corona discharge with a discharge current of a few hundred microamperes can blow out a small candle flame within about 1 cm of a discharge point. A pinwheel, with radial metal spokes and pointed tips bent to point along the circumference of a circle, can be made to rotate if energized by a corona discharge; the rotation is due to differential electric attraction between the metal spokes and the space charge shield region that surrounds the tips. Corona discharge A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is
Latin spelling and pronunciation which the previous long and short versions of the vowels have been either lost or replaced by other phonetic contrasts. A minimal set showing both long and short vowels and long and short consonants is "ānus" ('buttocks'), "annus" ('year'), "anus" ('old woman'). In Old Latin, as in Proto-Italic, stress normally fell on the first syllable of a word. During this period, the word-initial stress triggered changes in the vowels of non-initial syllables, the effects of which are still visible in classical Latin. Compare for example: In the earliest Latin writings, the original unreduced vowels are still visible. Study of this