The SciencesJune 3, 1916
“Pupinized” Telephone Lines
An Invention by Means of Which Telephone Conversations can be Carried on Over Long1 Distances
“Pupinized” Telephone Lines
An Invention by Means of Which Telephone Conversations can be Carried on Over Long1 Distances
When Electricity Was Really in its Infancy, What Sank the "Lusitania"? and more
The Decker Primary Battery
Electrical Units of the Present and Future