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Radio Equipment, Receivers Filing coherer used by Sir Oliver Lodge, 1894

Radio Equipment, Receivers Filing coherer used by Sir Oliver Lodge, 1894
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Largest available format 3504 × 2695 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 3504 × 2695 px 297 × 228 mm 1.1 MB
Medium 1024 × 788 px 87 × 67 mm 892 KB

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IMAGE number
UIS5069093
Image title
Radio Equipment, Receivers Filing coherer used by Sir Oliver Lodge, 1894
Auto-translated text View Original Source
Artist
Unknown
Location
Science Museum, London, UK
Medium
object
Image description

Radio Equipment, Receivers Filing coherer used by Sir Oliver Lodge, 1894. Invented in 1890 by the Frenchman Edouard Branly (1844-1940), the coherer is one of the most important of early radio wave detectors. Its potential for wireless communication was realised by the English physicist Sir Oliver Lodge (1836-1920) who gave the first public demonstration of wireless transmission and reception at the Royal Institution, London in June 1894. This coherer, used by Lodge at Oxford in 1894, was a glass tube filled with metallic filings loosely packed between two metal plugs attached to the wires of an electric circuit. These filings remained a poor conductor until subjected to radio waves. ©SSPL/Science Museum

Photo credit
SSPL/UIG / Bridgeman Images
Image keywords
19th century / Italy / Europe / Science / news / invention / thing / Telegraph - Telegraphy / wireless telegraphy / england english / great britain - british / communication / photography

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