Lecture on Stephen Gray's discoveries in electricity
A lecture at the Charterhouse, London on Stephen Gray's discoveries in electricity. In the early eighteenth century, Gray demonstrated that charges of electricity could be conducted by some materials for distances as great as 765 feet, while others did not conduct electricity at all. Eventually, he was able to send charges through 88 metres of wire suspended on silken threads to operate an electroscope - an instrument used to detect static electricity. By sending an electrical signal from one place to another, Gray established the basic principle of the electric telegraph.
© Illustrated London News Ltd/Mary Evans
Captured Luftwaffe 7 Staffel/Njg 2 Junkers Ju-88G-1 Bomber Equipped with Fug 220 Lichtenstein Sn-2 Radar, Naxos-Z and Fug 227 Flensburg Homer - Flying in RAF Royal Airforce Marking - the Aircraft Arrived Inadvertantly at Woodbridge, Suffolk, UK on 13 July 1944 Date: 1944
© aviation-images.com / Mary Evans Picture Library
1930s, 1944, 2nd, 4r Ur, 4r Ur, 88, Air, Bomber, Combat, England, Fast Bomber, Fighter, Force, German, Germany, Ju 88, Ju88, Junkers, Luftwaffe, Military, Multirole, Schnellbomber, Twin Engined, Uk, War, World, Ww2, Wwii
REYNAUD, Emile (1844-1918). French inventor, responsible
REYNAUD, Emile (1844-1918). French inventor, responsible for the first projected animated cartoon films. Reynaud created the Praxinoscope in 1877 and the Th颴re Optique in December 1888. 'Pantomimes Lumineuses'. Poster of the first public screenings of the Th颴re Optique (Optical Theatre), derived from praxinoscope, Paris, 1892. Poster (124 x 88 cm.). CHERET, Jules (1836-1932). Art Nouveau. Litography.
© J. Bedmar/Iberfoto/Mary Evans