Engraving of a morse code receiving machine
Numéro d’image : 11904447
| Morse code receiver. Engraving of a device for printing telegraph messages,devised by American inventor Samuel Morse in the 1840s. When a message was to be received,the weight (bottom left) was released turning the mechanism and feeding a strip of paper from a reel (Z). Electrical telegraph signals coming in from wires (a & b) energised electromagnets (H),which pulled down the iron or steel plate above them. By means of a pivoted lever,this raised the print head (W) which placed indentations in the paper strip which could be read. Morse devised a code which represented each alphabetical letter by a series of short ("dots") and long ("dashes") pulses | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library |
| Taille de l’image : | 5121 px × 3543 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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