Picture No | 10017000 |
Date | 1882 |
Description | Morse - Electric Telegraph |
Details |
Morse telegraphic apparatus Card 1 of 2 A - the forwarding end C - the 'key' which produces the break of contact F - the sounder system
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Source | Eckhardt Physics in Pictures Fig XVII . XVIII |
Credit | Mary Evans Picture Library |
Restrictions |
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