December 1883 had an intuition to transmit the image using a cardboard
Drilled that allowed scanning an image read by a cell of selenium
light sensitive material obtaining an electrical signal that could be
transmitted by cable and rebuild process the image in reverse with a
source of light modulated signal from the "video" obtained. On 6
January 1884 presents the patent application to Kaiserliches Patentamt
(German patent office) "Elektrisches Teleskop" What will remain
essential for the construction of television ' mechanical '.