Sólskin - 01.07.1953, Page 60

Sólskin - 01.07.1953, Page 60
Jámbrautin (Stephenson) ................... 1825 Blindraletur (Braille)..................... 1829 Ritsíminn (Gauss, Weber) .................. 1833 Frímerkið (Rowland Hill)................... 1837 Ljósmyndagerð (Daguerre o. fl.) ........... 1839 Nothæf saumavél (Howe) .................... 1846 Talsíminn (Bell, Gray) .................... 1876 Hljóðneminn (Edison) ...................... 1877 Hljóðritinn (eða hljómplatan) (Edison) ... 1877 Kvikmyndir (Edison, Lumiére) .............. 1895 Röntgengeislar (Röntgen) .................. 1895 Loftskeytin (Sörensen, Marconi, Poulsen) .. 1898 Radium (Curie-hjónin) ..................... 1898 Flugvélin (Wright-bræðurnir) .............. 1903 Vitamin ................................... 1912 Tal- og tónmyndir.......................... 1920 Otvarpssendingar .......................... 1920 Sjónvarp.................................. 1927 Sundmn atómsins............................ 1944 58

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Sólskin

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