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Hace 15 horas · 1837: Samuel Morse invents Morse code. 1838: Moritz von Jacobi invents electrotyping. 1839: William Otis invents the steam shovel. 1839: James Nasmyth invents the steam hammer. 1839: Edmond Becquerel invents a method for the photovoltaic effect, effectively producing the first solar cell. 1839: Charles Goodyear invents vulcanized rubber.
Hace 15 horas · The 1944 United States Senate elections coincided with the re-election of Franklin D. Roosevelt to his fourth term as president. The 32 seats of Class 3 were contested in regular elections, and three special elections were held to fill vacancies. The Democrats retained their large majority, although they lost a net of one seat to the Republicans.
