English: Beam of electrons emitted by an electron gun moving in a circle in a magnetic field (cyclotron motion). The electrons themselves are invisible, but their path is made visible by residual air molecules which glow by fluorescence when struck by the fast-moving electrons.
Español: Rayo de electrones moviéndose en una trayectoria circular en un campo magnético (Principio del Ciclotrón). La emisión de luz es causada por la excitación de átomos de gas en el bulbo.
Français : Un faisceau d'électrons défléchis par un champ magnétique forme un cercle par effet cyclotron. La lueur provient de l'excitation des atomes gazeux prisonniers de l'ampoule.
Polski: Wiązka elektronów poruszająca się po orbicie kołowej w stałym polu magnetycznym. Świecenie wywołane jest wzbudzeniami atomów gazu w bańce.
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Bagliore circolare generato per fluorescenza dall'interazione di un gas con un fascio di elettroni deflesso in traiettoria circolare da un campo magnetico
پرتو الکترونهایی که توسط یک تفنگ الکترونی در یک دایره در یک میدان مغناطیسی حرکت میکنند. خود الکترونها نامرئی هستند، اما مسیر آنها توسط مولکولهای هوای باقیمانده قابل مشاهده است که در اثر برخورد با الکترونهای با حرکت سریع توسط فلورسانس میدرخشند.
== Opis == {{Information |Description={{en|1=Beam of electrons moving in a circle in a magnetic field (cyclotron motion). Lighting is caused by exitation of atoms of gas in a bulb.}} {{pl|1=Wiązka elektronów poruszająca się po orbicie kołowej w stał