For many years electricians had tried in vain to overcome this difficulty. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Preece, one of the most eminent electricians in England, who, after discussing the question mathematically, said: Hence the sub-division of the light is an absolute ignis fatuus. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
In these he shows the power of points in draining and throwing off the electrical matter, which had hitherto escaped the notice of electricians. 本杰明·富兰克林.富兰克林自传.
But the oxide developed the phenomena now familiar to electricians, and the lamp short-circuited itself. 鲁伯特·萨金特·荷兰.历史性发明.