• 2021-04-14
    Whichthematicprogressionpatternhasbeenusedinthisparagraph? TheinventorofthediodevalvewasFleming.Hemadeuseofthefact,firstnoticedbyEdison,thatanelectriccurrentcouldbemadetoflowacrosstheemptyspacebetweenthehotfilamentofanelectriclampandanothermetalelectrodeplacedinsidetheevacuatedbulb.Thiseffectdependsuponthethermionicemissionofelectronsfromtheheatedmetalfilament. (W.P.Jolly,(1972).Electronics,p.61)