Первый телеграф
В этот день 21 октября 1832 была Продемонстрирована работа первой в мире линии электромагнитного телеграфа
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1 month ago 00:12:07 1
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2 months ago 00:10:42 6
2 months ago 00:06:50 1
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2 months ago 01:36:08 1
