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| Beginning in 1836, Samuel FB Morse and Alfred Vail developed an electric telegraph, which sent pulses of electrical current to control an electromagnet that was... |
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| Uploaded: November 30, 1999 at 12:00 am |
| Author: fuadsyazwan |
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| Length: 04:22 |
| Rating: 4.976744 |
| Views: 16628 |
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| Tags: History Morse Code Invention America Patern Communication Telegraph |
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