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2021-01-03 22:27:08
Hertz, Heinrich Rudolph"
Untersuchungen ueber die Ausbreitung der elektrischen Kraft."
Leipzig, Johann Ambrosius Barth, 1892. 8vo. W. 40 woodengraved illustrations in the text. Contemp. half mor., hinges some rubbing. (Vi, I, I (blank), 295, I ('Namenverzeichniss'). (Stamp in ink on verso printed title 'Albert Dahms 29.6.1893'). First edition. Dsb Vi, 340 - 350: Sparrow, Milestones, 101: Pmm, 377: 'Experimental proof by Hertz of the Faraday-Maxwell hypothesis that electrical waves can be projected through space was begun in 1887, eight years after Maxwell's death. The 2 main requirements were (a) a method of producing the waves., and (b) a method of detecting them once they were produced. Hertz found the first problem easy to solve. He used the oscillatory discharge of a condenser. Detection was much more difficult. J.J.Thomson described the results as one of the most marvellous triumphs of experimental skill. The experiments were reported periodically from 1887 onwards in the 'Annalen der Physik und Chemie' and are gathered together in the above volume.: Berkson, Fields of Force, p. 214: 'This book is a rare specimen, for it is a clear explanation by a scientist of how he came to make his dicovery. It is problem oriented, as well as clear and frank.': Ekeluff, 1454: Dibner, Heralds, item 71 (On the paper 'Ueber sehr schnelle electrische Schwingungen', in this volume on pp. 32 - 58): 'Hertz demonstrated what Maxwell had predicted, that electromagnetic waves radiated in space with the speed of light. Hertz determined these waves to be of greater length than light and that they could be reflected, refracted and polarized. This discovery and its demonstration le … [Click Below for Full Description]
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