Download e-book for iPad: Probing the Sky with Radio Waves: From Wireless Technology by Chen-Pang Yeang

By Chen-Pang Yeang

ISBN-10: 022601519X

ISBN-13: 9780226015194

By the overdue 19th century, engineers and experimental scientists as a rule knew how radio waves behaved, and via 1901 scientists have been capable of control them to transmit messages throughout lengthy distances. What not anyone might comprehend, although, used to be why radio waves the curvature of the Earth. Theorists wondered over this for almost 20 years earlier than physicists proven the zig-zag thought, an answer that resulted in the invention of a layer within the Earth’s top surroundings that bounces radio waves earthward—the ionosphere.
 
In Probing the Sky with Radio Waves, Chen-Pang Yeang files this enormous discovery and the advances in radio ionospheric propagation examine that happened in its aftermath. Yeang illustrates how the invention of the ionosphere reworked atmospheric technology from what have been essentially an observational activity into an experimental technological know-how. It additionally gave researchers a bunch of recent theories, experiments, and tools with which to raised comprehend the atmosphere’s structure, the starting place of atmospheric electrical energy, and the way the sunlight and geomagnetism form the Earth’s surroundings.  
 
This publication can be warmly welcomed via students of astronomy, atmospheric technology, geoscience, army and institutional background, and the heritage and philosophy of technology and expertise, in addition to by way of radio amateurs and electric engineers drawn to historic views on their craft.

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Additional info for Probing the Sky with Radio Waves: From Wireless Technology to the Development of Atmospheric Science

Sample text

Panel D: the transmitter’s antenna rotates from 0° to 360°; Panel B: the receiver’s antenna rotates from 0° to 360°. Marconi, “On methods” (1906), figures 2 and 4. direction was 0° from the aerial direction of the transmitter or receiver antenna. Typically, the intensity was minimal when the directional angle was about 110° or 250°. 37 In the same year, Braun also published his discovery on directed 37. Marconi, “On methods” (1906), 413–21. 38 In 1906, a year after leaving Strasbourg, Zenneck obtained a professorship in physics at the Braunschweig Technical University.

The solution should be general enough so that the same procedure, with slightly modified numerical coefficients, boundary or initial conditions, or analytical approximations, could solve other physical problems. 8 If Duhem’s view reflected his contemporaries’ collective mentality, it’s no wonder that the new mathematical physics tended to offer formal expressions of facts rather than explaining them and to focus on empirical phenomena that they could reduce to mathematical representations. Transoceanic propagation of radio waves became one such theoretical problem just after 1900.

Zenneck’s theoretical work resulted in a 1907 article in Annalen der Physik. 5). The novelty of his approach lay not only in the geometry, however; he did not use 39. Zenneck, Erinnerungen (1961), 162 (my translation). I thank the library of the Max Planck Institute for the History of Science in Berlin for providing me with a photocopy of relevant pages of the book. Theorizing Transatlantic Wireless with Surface Diffraction 43 any information about the dipole oscillator to explain the overall field that the source generated and that the boundary condition shaped.

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Probing the Sky with Radio Waves: From Wireless Technology to the Development of Atmospheric Science by Chen-Pang Yeang


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