細節
TELEVISION--Julius Paul Gottfried NIPKOW (1860-1940). Kaiserliches Patentamt. Patentschrift No. 30105 [...] Elektrisches Teleskop. Patentirt im Deutschen Reiche vom 6. Januar 1884 ab. Berlin: Reichsdruckerei for Kaiserliches Patentamt, 1885.
2° (275 x 185mm). Folding plate. (Partial light browning.) 20th-century red cloth, within polished calf chemise and slipcase (boards lightly marked).
FIRST EDITION. NIPKOW'S PATENT DECRIBING HIS APPARATUS TO TRANSMIT AN IMAGE ELECTRONICALLY, which was the first practical television system. A student of Helmholtz's in Berlin, Nipkow developed a scanning disc that registered an image as a series of lighter or darker areas using a selenium photocell, which could then be transmitted electronically to a light source which projected the image through a synchronised disc, thus inventing the first practical television system. However, the technique was limited by various technological impediments and other methods superceded it; nonetheless, Nipkow's invention remains the first practical television technology, developed some forty years before Baird's first public demonstration of his television system.
2° (275 x 185mm). Folding plate. (Partial light browning.) 20th-century red cloth, within polished calf chemise and slipcase (boards lightly marked).
FIRST EDITION. NIPKOW'S PATENT DECRIBING HIS APPARATUS TO TRANSMIT AN IMAGE ELECTRONICALLY, which was the first practical television system. A student of Helmholtz's in Berlin, Nipkow developed a scanning disc that registered an image as a series of lighter or darker areas using a selenium photocell, which could then be transmitted electronically to a light source which projected the image through a synchronised disc, thus inventing the first practical television system. However, the technique was limited by various technological impediments and other methods superceded it; nonetheless, Nipkow's invention remains the first practical television technology, developed some forty years before Baird's first public demonstration of his television system.
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