8026 G. Hartmut Altenmueller: Deutsches Museum Bonn - Dokumentation der wissenschaftlich-technischen Gegenwart. Spektrum 1995/11, 114-118. 2524 Clifford Ashley: Il grande libro dei nodi. Rizzoli 1989. 4904 Ernst Berninger: Ein Ingenieur des Manierismus - Ausstellung im Deutschen Museum Muenchen. Spektrum 1993/8, 99-100. Agostino Ramelli (1531-1608) sah die Mechanik als Teil der Mathematik und diese als die hervorragendste Bluete im Garten der Wissenschaften an. 16063 Wolfgang Bu''rger: Nur zwo''lf Stunden bis zur Ewigkeit. Spektrum Februar 2004, 102-103. Geschwindigkeitsmessung durch Zahnradgetriebe. 8880 Bernhard Fabian: Die Sammlung deutscher Drucke aus den Jahren 1450 bis 1912. Spektrum 1996/12, 116-118. A. Farinelli Toselli: Ferrara visse di ingegneri e architetti. Ingegneri-Architetti-Costruttori 553 (1994), 540-561. 7503 Alessandra Fiocca: Ingegneria a Ferrara. Ferrara Storia Gennaio/Febbraio 1996, 71-75. Alessandra Fiocca/Luigi Pepe: L'universita' e le scuole per gli ingegneri a Ferrara. Ann. Univ. Ferrara sez. VII, 32 (1986), 125-166. 5421 Barry Fox: History on the waves of the air. Reviews of the books "History of International Broadcasting" by James Wood and "Lee de Forest and the fatherhood of radio" by James Hijiya. New Scientist 19 June 1993, 42. Ulrich Giersch/Ulrich Kubisch: Gummi. Die elastische Faszination. Nicolai 1995, 380p. DM 68. 9571 John Hale: Der Gleitschlag - Rudertechnik der Antike. Spektrum 1996/9, 90-96. James Hijiya: Lee de Forest and the fatherhood of radio. Lehigh UP 1992/93, 180p. Pds. 28. Thomas Edison saw the first signs of electronic emission, in electric lamps, around 1880. William Preece, chief engineer of the British Post Office dubbed it the "Edison effect" and J. Ambrose-Fleming, professor of engineering at University College London, saw how lamps could work as valves. In 1907 Lee de Forest added a third electrode, and his Audion triode laid the foundation of amplification. In 1912 AT&T engineers showed the need for a vacuum inside the valve. De Forest narrowly escaped jail when his North American Wireless Corporation became bankrupt. For two decades he was locked in legal battle with Edwin Armstrong, inventor of FM radio, by challenging Armstrong's patent on regenerative feedback. An ever-impecunious inventor, he developed a sound film system, but saw it rejected by Hollywood in favour of Western Electric's Vitaphone system. De Forest died penniless, without a funeral. His opponent Armstrong committed suicide. 6412 Gerard Holzmann/Bjoern Pehrson: Optische Telegraphen und die ersten Informationsnetze. Spektrum 1994/3, 78-84. 4980 Friedrich Klemm: Geschichte der Technik. Rowohlt 1983. Pierre Lemonnier (ed.): Technological choices. Transformation in material cultures since the neolithic. Routledge 1992/93, 420p. Pds. 45. Across a range of contexts from Neolithis slash-and-burn farmers or Saharan oasis farmers to the evolution of aircraft or advanced urban transportation systems the essays in this book ask: Why was this tool choosen in preference to that? The message is: What actually comes into existence is always a small selection from an enormously wider array of possibilities. The reviewer (Andrew Sherratt) appreciated particularly Pierre Petrequin's study of Jura lake villages, which covers a period of more than 2000 years. He was equally fascinated by Robert Cresswell's magisterial study of traditional mills and whaterwheels from Europe to China, and Bruno Latour's insights into the underground railway system that Parisians never got. The book is expensive. 13659 Robert Lucky: The quickening of science communication. Science 14 July 2000, 259-264. Henri Petroski: Engineers of dreams. Great bridge builders and the spanning of America. Knopf 1995, 480p. $30. Propylaeen Technikgeschichte. 5 volumes. Ullstein 1992. Probably together circa 3000p and DM 248/volume. 5608 Andrew Sherratt: Review of the book "Technological choices" edited by Pierre Lemonnier. New Scientist 28 August 1993, 40. 15499 Konstantin Siegmann: Feuer und Mensch. Von der Altsteinzeit zum Global Change. Vjschrift Naturf. Ges. Zu''rich 147/2 (2002), 63-71. 17203 Philippe Simon/Marie-Laure Bouet: Invenzioni. Larus 2005, 120p. Eur 12. 14595 Gerold Wefer: Hingehen -staunen - entdecken. Spektrum 2000/7, 96-97. Das Universum Science Center Bremen. James Wood: History of international broadcasting. Peter Peregrinus 1992/93, 260p. Pds. 30. All began with the invention of the triode amplifying valve or vacuum tube. Without the triode, there would be no radio, no tv, and no consumer electronics. Entertainment broadcasting began in 1920 when Dame Nellie Melba sang from Guglielmo Marconi's base in Chelmsford and George Westinghouse broadcast presidential election results from Pittsburg. Wood's chapters on propaganda broadcasting during the war are especially good, says the reviewer (Barry Fox).