Tools and Modes of Representation in the Laboratory Sciences


Book Description

constitutive of reference in laboratory sciences as cultural sign systems and their manipulation and superposition, collectively shared classifications and associated conceptual frameworks,· and various fonns of collective action and social institutions. This raises the question of how much modes of representation, and specific types of sign systems mobilized to construct them, contribute to reference. Semioticians have argued that sign systems are not merely passive media for expressing preconceived ideas but actively contribute to meaning. Sign systems are culturally loaded with meaning stemming from previous practical applications and social traditions of applications. In new local contexts of application they not only transfer stabilized meaning but also can be used as active resources to add new significance and modify previous meaning. This view is supported by several analyses presented in this volume. Sign systems can be implemented like tools that are manipulated and superposed with other types of signs to forge new representations. The mode of representation, made possible by applying and manipulating specific types of representational tools, such as diagrammatic rather than mathematical representations, or Berzelian fonnulas rather than verbal language, contributes to meaning and forges fine-grained differentiations between scientists' concepts. Taken together, the essays contained in this volume give us a multifaceted picture of the broad variety of modes of representation in nineteenth-century and twentieth-century laboratory sciences, of the way scientists juxtaposed and integrated various representations, and of their pragmatic use as tools in scientific and industrial practice.










From Atoms to Molecules


Book Description

The focus of this volume by Professor Russell is the history of organic chemistry, which arose improbably out of early speculations about the construction of chemical compounds, and in particular their electrochemical nature. The rise of electrochemistry and the work of Berzelius were critical in this regard, and receive much attention in the first few chapters in this book. Aspects of the contributions of Frankland (fully explored elsewhere) and those of Kekulê and Hofmann are considered, together with the miscellaneous functions of organic synthesis and the origins of conformational analysis. Questions of chemical organisation are germane to the whole sequence of events and are briefly summarized before the whole last hundred years of organic chemistry are placed in historical perspective.




Nature


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Instruments and Experimentation in the History of Chemistry


Book Description

This volume moves chemical instruments and experiments into the foreground of historical concern, in line with the emphasis on practice that characterizes current work on other fields of science and engineering.




Bulletin


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Chemistry Department At Imperial College London, The: A History, 1845-2000


Book Description

This is the first comprehensive history of the chemistry department at Imperial College London. Based on archival records, oral testimony, published papers, published and unpublished memoirs, the book tells the story of this world-famous department from its foundation as the Royal College of Chemistry in 1845 to the large department it had become by the year 2000.The book covers research, teaching, departmental governance, students and social life. It also highlights the extraordinary contributions made to the war effort in both the first and second world wars. From its first professors, A. Wilhelm Hofmann and Edward Frankland, the department has been home to many eminent chemists, including, in the later twentieth century, the Nobel laureates Derek Barton and Geoffrey Wilkinson. New information on these and many others is presented in a lively narrative that places both people and events in the larger historical contexts of chemistry, politics, culture and the economy. The book will interest not only those connected with Imperial College, but anyone interested in chemistry and its history, or in higher




Dietary Studies


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Molecular World


Book Description

A compelling and innovative account that reshapes our view of nineteenth-century chemistry, explaining a critical period in chemistry’s quest to understand and manipulate organic nature. According to existing histories, theory drove chemistry’s remarkable nineteenth-century development. In Molecular World, Catherine M. Jackson shows instead how novel experimental approaches combined with what she calls “laboratory reasoning” enabled chemists to bridge wet chemistry and abstract concepts and, in so doing, create the molecular world. Jackson introduces a series of practice-based breakthroughs that include chemistry’s move into lampworked glassware, the field’s turn to synthesis and subsequent struggles to characterize and differentiate the products of synthesis, and the gradual development of institutional chemical laboratories, an advance accelerated by synthesis and the dangers it introduced. Jackson’s historical reassessment emerges from the investigation of alkaloids by German chemists Justus Liebig, August Wilhelm Hofmann, and Albert Ladenburg. Stymied in his own research, Liebig steered his student Hofmann into pioneering synthesis as a new investigative method. Hofmann’s practice-based laboratory reasoning produced a major theoretical advance, but he failed to make alkaloids. That landmark fell to Ladenburg, who turned to cutting-edge theory only after his successful synthesis. In telling the story of these scientists and their peers, Jackson reveals organic synthesis as the ground chemists stood upon to forge a new relationship between experiment and theory—with far-reaching consequences for chemistry as a discipline.




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