Results 1 to 10 of about 20,338 (240)
Early innovations in maritime telemedical services: the KDKF Radio Medico Station [PDF]
Journal of the Medical Library Association, 2023 “MAN PUT HIS TONGUE AGAINST REFRIGERATOR PIPE AND GOT IT FROZEN; HAVE THAWED IT OUT AND IT IS NOW BLISTERED AND SWOLLEN BUT NOT PAINFUL. ARRIVING HONOLULU FRIDAY; HOW CAN I HELP HIM MEANWHILE?” Thus read a message relayed via radiogram across the ocean ...
Johnathan Thayer +1 more
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A Historical Twist on Long-Range Wireless: Building a 103 km Multi-Hop Network Replicating Claude Chappe’s Telegraph [PDF]
Sensors, 2022 In 1794, French Engineer Claude Chappe coordinated the deployment of a network of dozens of optical semaphores. These formed “strings” that were hundreds of kilometers long, allowing for nationwide telegraphy.
Mina Rady +8 more
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Metasurface‐Assisted Wireless Communication with Physical Level Information Encryption [PDF]
Advanced Science, 2022 Since the discovery of wireless telegraphy in 1897, wireless communication via electromagnetic (EM) signals has become a standard solution to address increasing demand for information transfer in modern society.
Yilin Zheng +6 more
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A tale of two telegraphs: Cooke and Wheatstone’s differing visions of electric telegraphy
Science Museum Group Journal, 2017 This paper explores the early development of practical electric telegraphy in Britain during the nineteenth century. It exposes the two fundamentally different approaches to the design of telegraphic instruments specified in a joint patent between ...
Jean-François Fava-Verde
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Science Museum Group Journal, 2019 In 1860, renowned natural philosopher (now referred to as a ‘scientist’ or, more specifically in the case of Clerk Maxwell, a ‘physicist’) James Clerk Maxwell wrote ‘Valentine from a Telegraph Clerk ♂ [male] to a Telegraph Clerk ♀ [female]’ (Harman, 2001)
Elizabeth Bruton
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Around the Wire: Telegraphic Infrastructure and Gothic Energies in Late Victorian Britain
19, 2023 This article explores a link between gutta-percha, the natural South-East Asian latex used nearly exclusively as an insulation for nineteenth-century British telegraph cables, and the development of electromagnetic field theory. Field theory emerged from
Kameron Sanzo
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60 years of the Antarctic Treaty – history and celebration in radio waves [PDF]
Polarforschung, 2022 The Antarctic Treaty, successfully negotiated and signed in 1959, entered into force after ratification by the 12 original signatory countries in 1961.
V. Strecke, V. Strecke
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Media and Communication, 2018 This article examines the privatization of telegraphy in the British Empire from the perspective of Gibraltar, an overseas territory in the Mediterranean. While the history of international telegraphy is typically written from a world-systems perspective,
Bryce Peake
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Sommerfeld Integrals and Their Relation to the Development of Planar Microwave Devices
IEEE Journal of Microwaves, 2021 This paper deals with the mathematical expressions called Sommerfeld integrals. Introduced by A. Sommerfeld in 1909, they are mathematically equivalent to inverse Hankel transforms.
JUAN R. MOSIG, KRZYSZTOF A. MICHALSKI
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Mind Reading in Stage Magic: The “Second Sight” Illusion, Media, and Mediums
communication +1, 2015 This article analyzes the late-nineteenth-century stage illusion “The Second Sight,” which seemingly demonstrates the performers’ telepathic abilities.
Katharina Rein
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