1870-1879
1870 John Wesley Hyatt and his brother Isaiah patent celluloid, basing themselves on Alexander Parkes' discoveries with plasticized nitrocellulose. 1874 Astronomer Pierre Jules Janssen obtains the first photographic sequence with the "photographic revolver": Venus passing in front of the Sun. 1877 Frenchman Émile Reynaud invents the praxinoscope.
>> Watch video praxinoscope (La llum del cinema series). >> Watch video praxinoscope with music box. >> Watch video praxinoscope theater. >> Watch video praxinoscope theater (La llum del cinema series). >> Watch video praxinoscope projection. >> Watch video Toupie Fantoches (La llum del cinema series). 1878 Eadweard Muybridge takes the first series of photographic images of a moving animal.
>> Watch video Cronophotography >> Watch video Cronophotography (La llum del cinema series). | 1871 Richard Leach Maddox invents the dry plate, with a gelatin and silver bromide emulsion.
>> Watch video Photographic process of developed gelatinobromide. 1872 Louis Ducos du Hauron achieves first colour photograph using the subtractive method. 1879 Photogravure, photomechanical process. Karl Klic.
| Amateur Film It begins in the 1890s >> | 1873 Irish telegraph operator Joseph May discovers that the action of light causes variations in electrical resistance on bars of selenium and that these variations are proportional to the intensity of the light. An electrical signal can thus be created from light. The English engineer Willoughby Smith discover the photoconductivity of selenium, which later led to the development of the first photoelectric cells. 1875-1880 Based on discoveries in the photoconductivity of selenium, theoretical models called a Telectroscope are presented for the exploration of the image. Notable among are those by American inventor, George R. Carey, and the French scientist Constantin Selencq. Both of them are based on a panel divided into a large number of photoelectric cells. 1878 William Crookes discovers the properties of cathode rays through the "Crookes Tube".
| 1876 Elisha Gray and Alexander Graham Bell create, almost simultaneously, the first microphones capable of transforming the vibrations of acoustic pressure into a variable of electrical intensity.
1877 Charles Cros designs an invention that he calls the paleophone (with some characteristics similar to Edison's later phonograph). 1878 Thomas Alva Edison makes and patents the phonograph. The first device capable of recording and reproducing sound.
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