Title : 
Thermionic valves with dull-emitting filaments
         
        
            Author : 
Thompson, M. ; Bartlett, C.
         
        
        
        
        
            fDate : 
8/1/1924 12:00:00 AM
         
        
        
        
            Abstract : 
An account is given of the history of the dull-emitting thoriated tungsten filament and of the development of thermionic valves containing these filaments. Intrinsic properties are described and discussed.
         
        
            Keywords : 
radiotelegraphy;
         
        
        
            Journal_Title : 
Electrical Engineers, Journal of the Institution of
         
        
        
        
            DOI : 
10.1049/jiee-1.1924.0095