Read Bell Telephone Quarterly, 1940, Vol. 19 (Classic Reprint) - American Telephone and Telegraph Company | PDF Online

Full Download Bell Telephone Quarterly, 1940, Vol. 19 (Classic Reprint) - American Telephone and Telegraph Company file in ePub

Excerpt from Bell Telephone Quarterly, 1940, Vol. 19The reason that a telephone line cannot be indefinitely extended, like a railroad line, lies in the fact that a railroad train carries its own fuel and develops en route the energy for its own travel, while the trains of elec tric waves which carry telephone mes sages start out with the energy given to them by the

Title : Bell Telephone Quarterly, 1940, Vol. 19 (Classic Reprint)
Author : American Telephone and Telegraph Company
Language : en
Rating :
4.90 out of 5 stars
Type : PDF, ePub, Kindle
Uploaded : Apr 05, 2021

Post Your Comments: