(French) text The Electrician, London, 21 September 1900 Perskyi coins word "television" (25 August 1900) (页面存档备份,存于互联网档案馆) The Electrician, London, 21 September
料来改善其物理特性。极高速电子流也可以作为自由电子激光的增益介质。 Thomson, Joseph, Cathode Rays, The Electrician (James Gray), 1897, 39 Dahl, Per, Flash of the Cathode Rays: A History