Tungsten filament yashyutswe nubushyuhe bwo hejuru busohora electron zishyushye kugirango zisohokane umuyoboro mwinshi wa electron, kandi mugihe kimwe na electrode yihuta yashyizweho kugirango yihutishe electron zishyushye mumigezi ya electron ifite ingufu nyinshi. Umuvuduko mwinshi, ingufu za electron nyinshi zishobora kuba chlo ...