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le premier telegraphe optique a ete creer en 1794 parclaude chape
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samuel morse a creer le telegraphe electrique en 1837
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Graham Bell a invente le premier téléphone en 1876
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hertz inventes les premières réceptions d'onde radios
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REGINALD FESSENDEN
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A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.