Morse transmitter on board a ship. A telegraph operator would use this handset to tap out a code to send an electrical signal through a wire. Short and long electrical signals are used to represent the dots and dashes of the Morse code. In this way a message would be transmitted to a receiver where it would be decoded | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Donne, Michael |
Taille de l’image : | 4064 px × 2704 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |