Former Display Label - Communication by Electricity
Communication by Electricity
An anonymous author suggested in 1753 that electricity could be used as 'an expeditious method of conveying intelligence'. It took another century before telegraph became commonplace. The breakthrough came with experiments on electromagnetism, which made it possible to develop the electromagnetic telegraph and telephone. This was followed at the end of the 19th century by wireless telegraphy (radio).
The telegraph met the need for improved communication following the dramatic growth in transport and trade. In the 1860s, continents began to be linked by 'submarine' telegraph. Speech was transmitted by the telephone from the late 1870s.
Hertz's discovery of radio waves in 1887 demonstrated the feasibility of wireless telegraphy and radio broadcasting. Marconi made the first trans-Atlantic 'wireless' transmission in 1901 from Poldhu in Cornwall to Newfoundland. Important breakthroughs in commercial radio were the valve in 1904 and the transistor in 1948. Since then semiconductors have revolutionised communication.
Other narratives:
Related Objects:
- Inventory No. 17744, "Wireless Battery, by Hellesens, Enke & Ludvigsen Ltd, Denmark, c. 1924" [1986-6], Hellesens, Enke & Ludvigsen Ltd.
- Inventory No. 21864, "Electrical Linesman's Detector, by Marconi's Wireless Telegraph Co., London, c. 1910" [1989-16], Marconi's Wireless Telegraph Company Ltd.
- Inventory No. 26745, "Wireless Crystal, by Neutron, Mid-1920s", Neutron Ltd.
- Inventory No. 27050, "Radio Valve R5V, by Marconi Osram Valve Co., London, c. 1923", Osram
- Inventory No. 29475, "Coherer, Marconi Wireless Telegraph Co., Chelmsford, c. 1910" [1992-26], Marconi Wireless Telegraph Co. Ltd
- Inventory No. 30209, "Radio Valve R5V, by Marconi Osram Valve Co., London, c. 1923", Marconi Osram Valve Company
- Inventory No. 58066, "Microphone Amplifier, by Brown, c. 1922", S.G. Brown Ltd.
- Inventory No. 59554, "Crystal Radio Set, by Ensign, c. 1923" [1950-5], Ensign
- Inventory No. 59953, "Hemp-Covered Armoured Atlantic Telegraphy Cable, 1865" [?1926-28/2], Glass, Elliot & Co.
- Inventory No. 59981, "ABC Telegraph Transmitter, by Watkins & Hill, London, c. 1850", Watkins & Hill
- Inventory No. 62677, "Radio Valve, by Edison Swan Electric Co. Ltd, London, English, c. 1923" [1963-54], Edison Swan Electrical Company Limited
- Inventory No. 63037, "Crystal Set Radio with Valve Magnifier, by Marconi's Wireless Telegraph Co. Ltd., London, c. 1914" [1963-184], Marconi's Wireless Telegraph Company Ltd.
- Inventory No. 63659, "Crystal Set Radio, by Lissen Ltd, Richmond, English c. 1925", Lissen Ltd.
- Inventory No. 64106, "Hemp-Covered Armoured Atlantic Telegraphy Cable, 1869" [?1926-28/4], Glass, Elliot & Co.
- Inventory No. 64146, "Radio Valve, by Pope, Holland, 1919", N. V. Pope's Draad- en Lampen fabrieken, Pope's Draaden Lampen fabrieken. N.V.
- Inventory No. 64378, "Wooden Telephone Receiver, English, c. 1890"
- Inventory No. 65606, "Marconi H. J. Round Triode Valve, by Marconi Wireless Telegraph Co., Chelmsford, English, c. 1913" [1992-26], Marconi's Wireless Telegraph Company Ltd.
- Inventory No. 71208, "Radio Headphones, by Sterling Telephone & Electric Co. Ltd, London, c. 1925", Sterling Telephone & Electric Co. Ltd
- Inventory No. 72289, "Pipped (Broken) Incandescent Lamp with Crude Bayonet Fitting, English, c. 1890"
- Inventory No. 72859, "Moorhead R Bright Emitter Radio Valve, Otis B. Moorhead, San Fransico, U.S.A., c. 1917" [1992-26], Moorhead, Otis B., Moorhead Bright
- Inventory No. 73945, "Transmitting Valve Radio Part, Possibly by GEC-Osram Valve Co. Ltd., London, pre-1919", Marconi Osram Valve Company, Mullard
- Inventory No. 74782, "Two-Valve Radio Receiver, by Baty Luton, Luton, c. 1922" [1963-183], Baty Luton
- Inventory No. 80206, "Cossor Wuncell Dull Emitter Radio Part, by A. C. Cossor Ltd, London, 1924" [1959-53], A.C. Cossor Ltd.
- Inventory No. 81043, "Cossor W1 Dull Emitter Radio Part, by A. C. Cossor Ltd., London, 1924", A.C. Cossor Ltd.
- Inventory No. 82806, "Hemp-Covered Armoured Atlantic Telegraphy Cable, 1866" [?1926-28/3], Glass, Elliot & Co.
- Inventory No. 84208, "Radio Wavemeter No. 27 For 750-3000 Metres, Automatic Telephone Manufacturing Co. Ltd., London, 1918" [1964-129], Automatic Telephone Manufacturing Co. Ltd
- Inventory No. 85039, "Brown Cone Loudspeaker, by S. G. Brown Ltd., London, c. 1930" [1969-185], S.G. Brown Ltd.
- Inventory No. 86736, "Armoured Atlantic Telegraphy Cable, 1858" [?1926-28/1], R.S.Newell & Co.
- Inventory No. 87378, "RB1B Regenerator Unit, by Marconiphone Co. Ltd., London, c. 1923", Marconiphone Co. Ltd
- Inventory No. 88174, "V2A Radio Valve Receiver, by Marconiphone Co. Ltd., London, c. 1924", Marconiphone Co. Ltd
- Inventory No. 89528, "French Railway Telegraph and Receiver, French, c. 1850"
- Inventory No. 90725, "Model of a Single Needle Telegraph Receiver, by Watkins & Hill, London, c. 1850", Watkins & Hill
- Inventory No. 97366, "Range Block Radio Part, by Marconiphone, English, c. 1923", Marconiphone Co. Ltd