Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 25
The so-called Morse Code was developed to signal letters as well asfigures. The recorder was made much smaller and it was soon givenpractically the proportions which are standard today; in place of 15 6 MODERN LAND AND SUBMARINE TELEGRAPHY the cumbersome transmitting device with its type blocks, a… … ^Fig. 2. Morse Telegraph, 1S3S Model for the construction of practical telegraj)h lines, but it was not until1843 that such aid was obtained. Li the face of much oppositionand even ridicule, Congress finally passed a bill appropriating$30,000 for the construction of an experimental tclegrai)h line…
Electrical engineering
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