Tropicalizing the Portable Radio: Electronics and the U.S. Military's Battle against Fungi in the Pacific War.

As the U.S. military became embroiled in "jungle warfare" across the Pacific during World War II, it was caught off guard by the rapid deterioration of materials and equipment in the tropics, where the air was hot, humid, and teeming with fungal spores. This article tells the story of how American scientists and engineers understood the "tropical deterioration" of portable radios and electronics and developed techniques to counteract it. Examining scientific efforts to prevent tropical decay reveals how exposure to tropical conditions during World War II shaped the development of portable electronics. Contributing to envirotech history and environmental media studies, this article uncovers the importance of climate proofing to the history of electronics miniaturization. Tropical deterioration, furthermore, provides a technology-focused lens for enriching our historical understanding of the tropics as an environmental imaginary.

[Biophysical double-lives, 1939-1946. Or: spaces of boredom. On 'information discourse' and (dis)continuities in the life sciences]. / Biophysikalisches Doppelleben, 1939-1946. Oder: Räume der Lange-weile. Zur (Nicht-)Zäsur des 'Informationsdiskurses'.

Arguably, few things have shaped the historiography of the mid-twentieth century psy-sciences (and indeed, of the life sciences and science/technology/intellectual life quite generally) more profoundly than the story of cybernetics. This essay aims to undermine this technofuturistic picture of epistemological upheavals, of cyborg regimes of knowing, and of the incipient post-human, by reinserting back into the story the rather dull and unspectacular lives (and occupations) of the great majority of British, 'diverted' biologists during World War II. Instead of Ratio Clubbers or Macy-Conference frequenters, this essay is concerned with a much larger population of would-be biologists and their most pedestrian appropriations of, and exposures to, electronics. What I argue is that the prevalence and systematicity of such exposures in the course of the personnel-hungry radio-war points to a very different--low-key--picture of the war/technology-induced deflections of biological science at mid-century. As an example of how deeply at odds narrations of cybernetic's ascent tend to sit with developments on ground level, special attention will be devoted to the physiologists-turned-radar-scientists Alan Hodgkin and Andrew Huxley, and their war-time, or more properly, spare-time investigations into the biophysics of nerve. The latter--technical, difficult, and utterly unphilosophical--while absent from the cyber-theme-focused historiography, provided the basis for the tremendous impact Hodkgin and Huxley would in fact have on the mainstream, disciplinarily conservative physiological sciences; the larger aim however is to weave these far from peculiar biographical trajectories into a somewhat bigger picture of the intersections between radar electronics and biological science: a picture which does not centre on sensational discourses but on mundane electronic practices; and thus, on the generational experience of those who were known at the time as "ex radar folk with biological leanings".

Mathematical representations in science: a cognitive-historical case history.

The important role of mathematical representations in scientific thinking has received little attention from cognitive scientists. This study argues that neglect of this issue is unwarranted, given existing cognitive theories and laws, together with promising results from the cognitive historical analysis of several important scientists. In particular, while the mathematical wizardry of James Clerk Maxwell differed dramatically from the experimental approaches favored by Michael Faraday, Maxwell himself recognized Faraday as "in reality a mathematician of a very high order," and his own work as in some respects a re-representation of Faraday's field theory in analytic terms. The implications of the similarities and differences between the two figures open new perspectives on the cognitive role of mathematics as a learned mode of representation in science.

Historia de la robótica: de Arquitas de Tarento al robot Da Vinci (Parte I) / History of robotics: from archytas of Tarentum until Da Vinci robot. (Part I)

La cirugía robótica es la última novedad tecnológica en urología. Para conocer como funcionan los nuevos robots es interesante conocer su historia. La fabricación de máquinas que imitan al ser humano se ha mantenido desde hace más de 4000 años. Existen referencias a King-su Tse, China clásica, que inventa un autómata en el 500 a. C. Arquitas de Tarento (hacia 400 a.C.) es considerado el padre de la ingeniería mecánica, y uno de los maestros clásicos de la robótica occidental. Figuras como Heron de Alejandría, Hsieh-Fec, Al-Jazari, Roger Bacon, Juanelo Turriano, Leonardo da Vinci, Vaucanson o von Kempelen construyeron robots en la edad media, el renacimiento y el clasicismo. En el siglo XIX existe un auge de los autómatas y se producen importantes avances en todas las ramas de la ingeniería. En 1942 Asimov publica las tres leyes de la robótica coincidiendo con el inicio de la robótica moderna, basada en los avances en mecánica, electrónica e informática. El desarrollo de robots en el terreno industrial, bélico y aeroespacial durante el siglo XX permite la aparición de robots de gran precisión, útiles en cirugía, como el robot quirúrgico da Vinci (Intuitive Surgical Inc, Sunnyvale, CA, USA)

Robotic surgery is the newst technologic option in urology. To understand how new robots work is interesting to know their history. The desire to design machines imitating humans continued for more than 4000 years. There are references to King-su Tse (clasic China) making up automaton at 500 a. C. Archytas of Tarentum (at around 400 a.C.) is considered the father of mechanical engineering, and one of the occidental robotics classic referents. Heron of Alexandria, Hsieh-Fec, Al-Jazari, Roger Bacon, Juanelo Turriano, Leonardo da Vinci, Vaucanson o von Kempelen were robot inventors in the middle age, renaissance and classicism. At the XIXth century, automaton production underwent a peak and all engineering branches suffered a great development. At 1942 Asimov published the three robotics laws, based on mechanics, electronics and informatics advances. At XXth century robots able to do very complex self governing works were developed, like da Vinci Surgical System (Intuitive Surgical Inc, Sunnyvale, CA, USA), a very sophisticated robot to assist surgeons

An overview of the first half-century of molecular electronics.

The seminal ideas from which molecular electronics has developed were the theories of molecular conduction advanced in the late 1940s by Robert S. Mulliken and Albert Szent-Gyorgi. These were, respectively, the concept of donor-acceptor charge transfer complexes and the possibility that proteins might in fact not be insulators The next two decades saw a burgeoning of experimental and theoretical work on electron transfer systems, together with a lone effort by D.D. Eley on conduction in proteins. The call by Feynman in his famous 1959 lecture There's Plenty of Room at the Bottom for chemists, engineers and physicists to combine to build up structures from the molecular level was influential in turning attention to the possibility of engineering single molecules to function as elements in information-processing systems. This was made tangible by the proposal of Aviram and Ratner in 1974 to use a Mulliken-like electron donor-acceptor molecule as a molecular diode, generalizing molecular conduction into molecular electronics. In the early 1970s the remarkably visionary work of Forrest L. Carter of the U.S. Naval Research Laboratories began to appear: designs for molecular wires, switches, complex molecular logic elements, and a host of related ideas were advanced. Shortly after that, conferences on molecular electronics began to be held, and the interdisciplinary programs that Feynman envisaged. There was a surge in both experimental and theoretical work in molecular electronics, and the establishment of many research centres. The past five years or so have seen extraordinarily rapid progress in fabrication and theoretical understanding. The history of how separate lines of research emanating from fundamental insights of about 50 years ago have coalesced into a thriving international research program in what might be called the ultimate nanotechnology is the subject of this review; it concentrates on the lesser-appreciated early developments in the field.

A short history of powered wheelchairs.

This article recounts some early findings on a history of powered wheelchairs in the 20th century from an analysis of archival materials, oral accounts, and secondary sources. The primary goal of this article is not to provide the definitive history of powered wheelchairs, but rather to further our understanding of wheelchair innovation through a historical analysis. The paper sheds light on some of the richness and complexities involved in powered wheelchair innovation, highlights the nonlinearity of that process, and explores the roles of and the relationships between social and technological change. Although it is evident that powered mobility has revolutionized the life experiences of many disabled people, enabling independence, social interaction, and even the facilitation of socio-psychological development, few have charted the social and technological topography that brought this revolutionary change about. In partially mapping the history of powered wheelchairs, this paper draws attention to the idea that wheelchairs are not simply technical devices, but also social and political machines entwined with socio-political conditions and expectations.

Biomedical engineering in the early U.S. aerospace program.

Much of the bioinstrumentation in the early U.S. aerospace program in the 1950's was undertaken by the U.S. Air Force, first at Randolph Field, TX, and then at Brooks AFB, TX. We document here some of the equipment and some of the experiences encountered by the early experimenters. This period coincided with the introduction of solid-state circuitry into biomedical instrumentation and also strongly influenced research into the electrochemical interface between metal electrodes and the ionic body environment. The author recalls much of his own early work, as well as his recollections of some of the other early researchers.

The history of computing.

This article follows the development of computerized devices from the primitive manual systems of the ancient world to the sophisticated electronic devices of today.