Mathematics of Discrete Structures for Computer Science

This book examines the role and character of Homer's people, laoi, in Homeric story-telling, arguing that Homeric poetry is crucially concerned with the people as a basis for communal life. Both The Iliad and The Odyssey are read as sustained meditations on the processes involved in protecting and destroying the people. The investigation draws on a wide range of approaches from formulaic analysis to the study of early performance contexts. From a close reading of the Homeric epics, Homer's people emerge as a community without effective social structures. When this is viewed from the perspective of Homeric performances in the polis, a contrast between Homer's laoi and the founding people of ritual emerges. While the former typically perish, the survival of the latter is secured by the establishment of successful institutions.

Twenty-nine playful poems from the maven of math poetry + ingenious high-concept art = countless hours of mind-blowing, mathematical fun.Award-winning author Betsy Franco is back with another pitch-perfect performance that explores a range of math topics―from fractions and time measurements to geometry and graphs―in a way that relates math to the daily lives of children. Even the most mathematically disinclined will warm to these innovative poems, illustrated with game-changing wit and whimsy by Priscilla Tey, whose clever mechanical “Numbots” guide readers through a surreal playground of calculated delights. From multiplying mice to missing socks, from stinky scales to bug races, this collection of imaginative verse subtracts the mystery, fear, and loathing from mathematics, making it engrossing and fun for all.

This 1994 book introduces the tools of modern differential geometry, exterior calculus, manifolds, vector bundles and connections, to advanced undergraduate and beginning graduate students in mathematics, physics and engineering. The book covers both classical surface theory and the modern theory of connections and curvature, and includes a chapter on applications to theoretical physics. The only prerequisites are multivariate calculus and linear algebra; no knowledge of topology is assumed. The powerful and concise calculus of differential forms is used throughout. Through the use of numerous concrete examples, the author develops computational skills in the familiar Euclidean context before exposing the reader to the more abstract setting of manifolds. There are nearly 200 exercises, making the book ideal for both classroom use and self-study.

The first edition of this popular book on particle physics received universal acclaim for its clear and readable style. In this second edition the authors have brought the subject right up to date, including the discovery of the 'top quark' and the search for the Higgs particle. The book is the result of a collaboration between a world-famous elementary particle physicist and a physicist specialising in popular science writing. Together they have produced a fascinating account of the search for the fundamental building blocks of matter. This lucid and entertaining accountwill fascinate anyone wishing to keep pace with this part of the progress of human knowledge, from scientifically educated general readers through to professional physicists.

Pseudo-random sequences are essential ingredients of every modern digital communication system including cellular telephones, GPS, secure internet transactions and satellite imagery. Each application requires pseudo-random sequences with specific statistical properties. This book describes the design, mathematical analysis and implementation of pseudo-random sequences, particularly those generated by shift registers and related architectures such as feedback-with-carry shift registers. The earlier chapters may be used as a textbook in an advanced undergraduate mathematics course or a graduate electrical engineering course; the more advanced chapters provide a reference work for researchers in the field. Background material from algebra, beginning with elementary group theory, is provided in an appendix.

Now available in the Cambridge Mathematical Library, the classic work from Luis Santaló. Integral geometry originated with problems on geometrical probability and convex bodies. Its later developments, however, have proved to be useful in several fields ranging from pure mathematics (measure theory, continuous groups) to technical and applied disciplines (pattern recognition, stereology). The book is a systematic exposition of the theory and a compilation of the main results in the field. The volume can be used to complement courses on differential geometry, Lie groups or probability or differential geometry. It is ideal both as a reference and for those wishing to enter the field.

Synaesthesia is a fascinating cognitive phenomenon where one type of stimulation evokes the sensation of another. For example, synaesthetes might perceive colours when listening to music, or tastes in the mouth when reading words. This book provides an insight into the idiosyncratic nature of synaesthesia by exploring its relationships with other dimensions of individual differences. Many characteristics of linguistic-colour synaesthetes are covered including personality, temperament, intelligence, creativity, emotionality, attention, memory, imagination, colour perception, body lateralization and gender. Aleksandra Maria Rogowska proposes that linguistic-colour synaesthesia can be considered as an abstract form of a continuous variable in the broader context of cross- and intra-modal associations. There has been a resurgence of interest in synaesthesia and this book will appeal to students and scientists of psychology, cognitive science and social science, and to those who are fascina

This book examines the American legal system, including a comprehensive treatment of the U.S. Supreme Court. Despite this treatment, the 'in' from the title deserves emphasis, for it extensively examines lower courts, providing separate chapters on state courts, the US District Courts, and the US Courts of Appeals. The book analyzes these courts from a legal/extralegal framework, drawing different conclusions about the relative influence of each based on institutional structures and empirical evidence. The book is also tied together through its attention to the relationship between lower courts and the Supreme Court. Additionally, Election 2000 litigation provides a common substantive topic linking many of the chapters. Finally, it provides extended coverage to the legal process, with separate chapters on civil procedure, evidence, and criminal procedure.

This book examines the American legal system, including a comprehensive treatment of the U.S. Supreme Court. Despite this treatment, the 'in' from the title deserves emphasis, for it extensively examines lower courts, providing separate chapters on state courts, the US District Courts, and the US Courts of Appeals. The book analyzes these courts from a legal/extralegal framework, drawing different conclusions about the relative influence of each based on institutional structures and empirical evidence. The book is also tied together through its attention to the relationship between lower courts and the Supreme Court. Additionally, Election 2000 litigation provides a common substantive topic linking many of the chapters. Finally, it provides extended coverage to the legal process, with separate chapters on civil procedure, evidence, and criminal procedure.

Sub-Riemannian geometry is the geometry of a world with nonholonomic constraints. In such a world, one can move, send and receive information only in certain admissible directions but eventually can reach every position from any other. In the last two decades sub-Riemannian geometry has emerged as an independent research domain impacting on several areas of pure and applied mathematics, with applications to many areas such as quantum control, Hamiltonian dynamics, robotics and Lie theory. This comprehensive introduction proceeds from classical topics to cutting-edge theory and applications, assuming only standard knowledge of calculus, linear algebra and differential equations. The book may serve as a basis for an introductory course in Riemannian geometry or an advanced course in sub-Riemannian geometry, covering elements of Hamiltonian dynamics, integrable systems and Lie theory. It will also be a valuable reference source for researchers in various disciplines.

Giving a detailed overview of the subject, this book takes in the results and methods that have arisen since the term 'self-organised criticality' was coined twenty years ago. Providing an overview of numerical and analytical methods, from their theoretical foundation to the actual application and implementation, the book is an easy access point to important results and sophisticated methods. Starting with the famous Bak-Tang-Wiesenfeld sandpile, ten key models are carefully defined, together with their results and applications. Comprehensive tables of numerical results are collected in one volume for the first time, making the information readily accessible to readers. Written for graduate students and practising researchers in a range of disciplines, from physics and mathematics to biology, sociology, finance, medicine and engineering, the book gives a practical, hands-on approach throughout. Methods and results are applied in ways that will relate to the reader's own research.

Kant's category of reality is an often overlooked element of his Critique of Pure Reason. Tal Glezer shows that it nevertheless belongs at the core of Kant's mature critical philosophy: it captures an issue that motivated his critical turn, shaped his theory of causation, and established the role of his philosophy of science. Glezer's study traces the roots of Kant's category of reality to early modern debates over the intelligibility of substantial forms, fueled by the tension between the idea of non-extended substances and that of extended objects. This tension influenced Kant's pre-critical work, and eventually inspired his radical break towards transcendental idealism. Glezer explores the importance of reality for Kant's conceptions of cause and force, and sheds new light on his philosophy of physical science, including gravity. His book will interest scholars of Kant and of early modern philosophy, as well as historians of scientific ideas.

Kant's category of reality is an often overlooked element of his Critique of Pure Reason. Tal Glezer shows that it nevertheless belongs at the core of Kant's mature critical philosophy: it captures an issue that motivated his critical turn, shaped his theory of causation, and established the role of his philosophy of science. Glezer's study traces the roots of Kant's category of reality to early modern debates over the intelligibility of substantial forms, fueled by the tension between the idea of non-extended substances and that of extended objects. This tension influenced Kant's pre-critical work, and eventually inspired his radical break towards transcendental idealism. Glezer explores the importance of reality for Kant's conceptions of cause and force, and sheds new light on his philosophy of physical science, including gravity. His book will interest scholars of Kant and of early modern philosophy, as well as historians of scientific ideas.

Fiscal federalism has long been an important topic of inquiry in applied public economics, and interest in the functioning of intergovernmental fiscal relationships in multi-tiered public sector structures does not seem to be fading. Rather, the recent economic downturn and sovereign debt crisis have brought the analysis of multi-level fiscal governance to the forefront of academic discourse and stimulated the search for tax assignments that ease coordination between authorities at different tiers while preserving local fiscal autonomy and minimizing the harmful effects of taxation on the prospects of economic recovery. This Element examines the recent empirical work in this area and discusses the most critical issues that future research will need to address in order to push further the frontier of econometric analysis in fiscal federalism.

From the French Revolution onwards, constituent power has been a key concept for thinking about the principle of popular power, and how it should be realised through the state and its institutions. Tracing the history of constituent power across five key moments - the French Revolution, nineteenth-century French politics, the Weimar Republic, post-WWII constitutionalism, and political philosophy in the 1960s - Lucia Rubinelli reconstructs and examines the history of the principle. She argues that, at any given time, constituent power offered an alternative understanding of the power of the people to those offered by ideas of sovereignty. Constituent Power: A History also examines how, in turn, these competing understandings of popular power resulted in different institutional structures and reflects on why contemporary political thought is so prone to conflating constituent power with sovereignty.

Particularly in the context of internal conflicts, international law is frequently unable to create and sustain frameworks for peace in Africa. In Peacebuilding in the African Union, Abou Jeng explores the factors which have prevented such steps forward in the interaction between the international legal order and postcolonial Africa. In the first work of its kind, Jeng considers whether these limitations necessitate recasting the existing conceptual structure and whether the Constitutive Act of the African Union provides exactly this opportunity through its integrated peace and security framework. Through the case studies of Burundi and Somalia, Jeng examines the structures and philosophy of the African Union and assesses the capacity of its practices in peacemaking. In so doing, this book will be of great practical value to scholars and legal practitioners alike.

Quantum engineering – the design and fabrication of quantum coherent structures – has emerged as a field in physics with important potential applications. This book provides a self-contained presentation of the theoretical methods and experimental results in quantum engineering. The book covers topics such as the quantum theory of electric circuits, theoretical methods of quantum optics in application to solid state circuits, the quantum theory of noise, decoherence and measurements, Landauer formalism for quantum transport, the physics of weak superconductivity and the physics of two-dimensional electron gas in semiconductor heterostructures. The theory is complemented by up-to-date experimental data to help put it into context. Aimed at graduate students in physics, the book will enable readers to start their own research and apply the theoretical methods and results to their current experimental situation.

In the two hundred years from 1475 London was transformed from a medieval commune into a metropolis of half a million people, a capital city and a major European trading centre. New possibilities emerged for cultural exchange and combination, social and political order, and literary expression. Integrating literary and historical analysis, and drawing on recent work in literary theory and cultural studies, Literature and Culture in Early Modern London provides a comprehensive account of the changing image and influence of London in lyrics, ballads, jests, epics, satires, plays, pageants, chronicles, treatises, sermons and official documents. Lawrence Manley shows how the literature and culture of London contributed to the new structures of capitalism, the process of 'behaviour urbanisation', and a paradoxical liberation of the individual through the city's concentrated power.

Most textbooks on regression focus on theory and the simplest of examples. Real statistical problems, however, are complex and subtle. This is not a book about the theory of regression. It is about using regression to solve real problems of comparison, estimation, prediction, and causal inference. Unlike other books, it focuses on practical issues such as sample size and missing data and a wide range of goals and techniques. It jumps right in to methods and computer code you can use immediately. Real examples, real stories from the authors' experience demonstrate what regression can do and its limitations, with practical advice for understanding assumptions and implementing methods for experiments and observational studies. They make a smooth transition to logistic regression and GLM. The emphasis is on computation in R and Stan rather than derivations, with code available online. Graphics and presentation aid understanding of the models and model fitting.

Most textbooks on regression focus on theory and the simplest of examples. Real statistical problems, however, are complex and subtle. This is not a book about the theory of regression. It is about using regression to solve real problems of comparison, estimation, prediction, and causal inference. Unlike other books, it focuses on practical issues such as sample size and missing data and a wide range of goals and techniques. It jumps right in to methods and computer code you can use immediately. Real examples, real stories from the authors' experience demonstrate what regression can do and its limitations, with practical advice for understanding assumptions and implementing methods for experiments and observational studies. They make a smooth transition to logistic regression and GLM. The emphasis is on computation in R and Stan rather than derivations, with code available online. Graphics and presentation aid understanding of the models and model fitting.

Barron's new Family Nurse Practitioner Certification Exam is designed to help nurse practitioners achieve certification in their given specialty. This guide provides the tools you need to demonstrate proficiency, including:Two full-length practice tests in the book (one ANCC-style and one AANPCB-style) with detailed answers and explanations for every questionTwo additional full-length practice tests online (one ANCC-style and one AANPCB-style), that allow users to practice working through all of the computer-based question types, and detailed answers and explanations for every questionAn overview of both the ANCC and the AANPCB and their respective versions of the FNP exam, including information about the exam format, scoring, question types, knowledge domains tested, and certification renewal requirementsComprehensive review of all of the major topics on both versions' exam blueprints, including system reviews, reproductive reviews, mental health reviews, and much moreEvery chapter co

Structural equation modelling (SEM) is a technique that is used to estimate, analyse and test models that specify relationships among variables. The ability to conduct such analyses is essential for many problems in ecology and evolutionary biology. This book begins by explaining the theory behind the statistical methodology, including chapters on conceptual issues, the implementation of an SEM study and the history of the development of SEM. The second section provides examples of analyses on biological data including multi-group models, means models, P-technique and time-series. The final section of the book deals with computer applications and contrasts three popular SEM software packages. Aimed specifically at biological researchers and graduate students, this book will serve as valuable resource for both learning and teaching the SEM methodology. Moreover, data sets and programs that are presented in the book can also be downloaded from a website to assist the learning process.

Electronic Concepts provides a detailed introduction to modern microelectronics. Equal emphasis is placed on analog and digital circuits, and the applications of particular devices and circuits are described within the context of actual electronic systems. The author begins with an overview of several important electronic systems, discussing in detail the types of signals that circuits are used to process. In the following chapters, he deals with individual devices. For each device he presents a brief physical description and demonstrates the use of different models in describing the device's behaviour in a particular circuit application. SPICE computer simulations are used throughout the text to supplement analytic descriptions. The book contains over 500 circuit diagrams and figures, over 400 homework problems, and over 100 simulation and design exercises. It includes many worked examples and is an ideal textbook for introductory courses in electronics. Laboratory experiments are ava

Structural equation modelling (SEM) is a technique that is used to estimate, analyse and test models that specify relationships among variables. The ability to conduct such analyses is essential for many problems in ecology and evolutionary biology. This book begins by explaining the theory behind the statistical methodology, including chapters on conceptual issues, the implementation of an SEM study and the history of the development of SEM. The second section provides examples of analyses on biological data including multi-group models, means models, P-technique and time-series. The final section of the book deals with computer applications and contrasts three popular SEM software packages. Aimed specifically at biological researchers and graduate students, this book will serve as valuable resource for both learning and teaching the SEM methodology. Moreover, data sets and programs that are presented in the book can also be downloaded from a website to assist the learning process.

Electronic Concepts provides a detailed introduction to modern microelectronics. Equal emphasis is placed on analog and digital circuits, and the applications of particular devices and circuits are described within the context of actual electronic systems. The author begins with an overview of several important electronic systems, discussing in detail the types of signals that circuits are used to process. In the following chapters, he deals with individual devices. For each device he presents a brief physical description and demonstrates the use of different models in describing the device's behaviour in a particular circuit application. SPICE computer simulations are used throughout the text to supplement analytic descriptions. The book contains over 500 circuit diagrams and figures, over 400 homework problems, and over 100 simulation and design exercises. It includes many worked examples and is an ideal textbook for introductory courses in electronics. Laboratory experiments are ava

Applied Nonparametric Regression is the first book to bring together in one place the techniques for regression curve smoothing involving more than one variable. The computer and the development of interactive graphics programs have made curve estimation possible. This volume focuses on the applications and practical problems of two central aspects of curve smoothing: the choice of smoothing parameters and the construction of confidence bounds. Härdle argues that all smoothing methods are based on a local averaging mechanism and can be seen as essentially equivalent to kernel smoothing. To simplify the exposition, kernel smoothers are introduced and discussed in great detail. Building on this exposition, various other smoothing methods (among them splines and orthogonal polynomials) are presented and their merits discussed. All the methods presented can be understood on an intuitive level; however, exercises and supplemental materials are provided for those readers desiring a deeper un

The Rabbit Hutch is stunning debut novel about the quest for transcendence and the desire for love, set in a crumbling apartment building in the post-industrial Midwest.The automobile industry has abandoned Vacca Vale, Indiana, leaving the residents behind, too. In a run-down apartment building on the edge of town, commonly known as the Rabbit Hutch, a number of people now reside quietly, looking for ways to live in a dying city. Apartment C2 is lonely and detached. C6 is aging and stuck. C8 harbors an extraordinary fear. But C4 is of particular interest.Here live four teenagers who have recently aged out of the state foster-care system: three boys and one girl, Blandine, who The Rabbit Hutch centers around. Hauntingly beautiful and unnervingly bright, Blandine is plagued by the structures, people, and places that not only failed her but actively harmed her. Now all Blandine wants is an escape, a true bodily escape like the mystics describe in the books she reads.Set across one week an

Exclusions from Patentability reviews the history of the adoption of exclusions from patentability under the European Patent Convention since its first conception in 1949 through to its most recent revision. The analysis shows how other intellectual property treaties, such as UPOV, the Strasbourg Patent Convention, PCT, the EU Biotech Directive and TRIPS have affected the framing of the exclusions. Particular attention is given to those exclusions considered the most contentious (computer programmes, discoveries, medical treatments, life forms and agriculture) and those decisions which have been most influential in shaping the approaches by which the exclusions have been interpreted. The 'morality' exclusion and the interpretation of the exclusions are discussed critically and suggestions for coherent interpretation are made.

Exclusions from Patentability reviews the history of the adoption of exclusions from patentability under the European Patent Convention since its first conception in 1949 through to its most recent revision. The analysis shows how other intellectual property treaties, such as UPOV, the Strasbourg Patent Convention, PCT, the EU Biotech Directive and TRIPS have affected the framing of the exclusions. Particular attention is given to those exclusions considered the most contentious (computer programmes, discoveries, medical treatments, life forms and agriculture) and those decisions which have been most influential in shaping the approaches by which the exclusions have been interpreted. The 'morality' exclusion and the interpretation of the exclusions are discussed critically and suggestions for coherent interpretation are made.

Parasitology is an immensely important aspect of biological science. This manual presents fifty easy-to-follow laboratory exercises for student practical (lab) classes. All the exercises are tried and tested by the authors and are used in a wide variety of university undergraduate teaching departments. They range from relatively simple observational exercises, using local materials and requiring little in the way of equipment, to more technically demanding experiments in physiology and molecular parasitology. Each exercise includes a list of necessary equipment, consumables and sources of parasite material, instructions for staff and students, including aspects of safety, expected results and some analysis provided by questions; there are ideas for further exploration and information on similar exercises, and lists of selected further reading. This book should be an essential purchase for all teachers of parasitology at the university undergraduate level and for students taking laborat

Parasitology is an immensely important aspect of biological science. This manual presents fifty easy-to-follow laboratory exercises for student practical (lab) classes. All the exercises are tried and tested by the authors and are used in a wide variety of university undergraduate teaching departments. They range from relatively simple observational exercises, using local materials and requiring little in the way of equipment, to more technically demanding experiments in physiology and molecular parasitology. Each exercise includes a list of necessary equipment, consumables and sources of parasite material, instructions for staff and students, including aspects of safety, expected results and some analysis provided by questions; there are ideas for further exploration and information on similar exercises, and lists of selected further reading. This book should be an essential purchase for all teachers of parasitology at the university undergraduate level and for students taking laborat

Whether processes in the natural world are dependent or independent of the scale at which they operate is one of the major issues in hydrologic science. In this volume, leading hydrologists present their views on the role of scale effects in hydrologic phenomena occurring in a range of field settings, from the land surface to deep fractured rock. Self-contained and thought-provoking chapters cover both theoretical and applied hydrology. They provide critical insights into important topics such as general circulation models, floods, river networks, vadose-zone processes, groundwater transport, and fluid flow through fractured media. This book is intended as an accessible introduction for graduate students and researchers to some of the most significant questions and challenges that will face hydrologic science in the twenty-first century.

A Physicalist Manifesto is a full treatment of the comprehensive physicalist view that, in some important sense, everything is physical. Andrew Melnyk argues that the view is best formulated by appeal to a carefully worked-out notion of realization, rather than supervenience; that, so formulated, physicalism must be importantly reductionist; that it need not repudiate causal and explanatory claims framed in non-physical language; and that it has the a posteriori epistemic status of a broad-scope scientific hypothesis. Two concluding chapters argue in detail that contemporary science provides no significant empirical evidence against physicalism and some considerable evidence for it. Written in a brisk, candid and exceptionally clear style, this 2003 book should appeal to professionals and students in philosophy of mind, metaphysics and philosophy of science.

A Physicalist Manifesto is a full treatment of the comprehensive physicalist view that, in some important sense, everything is physical. Andrew Melnyk argues that the view is best formulated by appeal to a carefully worked-out notion of realization, rather than supervenience; that, so formulated, physicalism must be importantly reductionist; that it need not repudiate causal and explanatory claims framed in non-physical language; and that it has the a posteriori epistemic status of a broad-scope scientific hypothesis. Two concluding chapters argue in detail that contemporary science provides no significant empirical evidence against physicalism and some considerable evidence for it. Written in a brisk, candid and exceptionally clear style, this 2003 book should appeal to professionals and students in philosophy of mind, metaphysics and philosophy of science.

Whether processes in the natural world are dependent or independent of the scale at which they operate is one of the major issues in hydrologic science. In this volume, leading hydrologists present their views on the role of scale effects in hydrologic phenomena occurring in a range of field settings, from the land surface to deep fractured rock. Self-contained and thought-provoking chapters cover both theoretical and applied hydrology. They provide critical insights into important topics such as general circulation models, floods, river networks, vadose-zone processes, groundwater transport, and fluid flow through fractured media. This book is intended as an accessible introduction for graduate students and researchers to some of the most significant questions and challenges that will face hydrologic science in the twenty-first century.

The gripping origin story of Pong, Atari, and the digital icons who defined the world of video games.A deep, nostalgic dive into the advent of gaming, Easy to Learn, Difficult to Master returns us to the emerging culture of Silicon Valley. At the center of this graphic history, dynamically drawn in colors inspired by old computer screens, is the epic feud that raged between Atari founder Nolan Bushnell and inventor Ralph Baer for the title of “father of the video game.” While Baer, a Jewish immigrant whose family fled Germany for America, developed the first TV video-game console and ping-pong game in the 1960s, Bushnell, a self-taught whiz kid from Utah, put out Atari’s pioneering table-tennis arcade game, Pong, in 1972. Thus, a prolonged battle began over who truly spearheaded the multibillion-dollar gaming industry, and around it a sweeping narrative about invention, inspiration, and the seeds of digital revolution.

Originally published in 1936 as the final instalment of McKenzie's School Certificate series, this book explains the physical properties of sound. The text is accompanied by multiple photographs, drawings and diagrams to illustrate key points, and every chapter concludes with several questions for students to reinforce the chapter content. This book will be of value to anyone with an interest in the history of science education in Britain.

Originally published in 1936 as the third instalment of McKenzie's School Certificate trilogy, this book explains the physical properties of light. The text is accompanied by multiple photographs, drawings and diagrams to illustrate key points, and every chapter concludes with several questions for students to reinforce the chapter content. This book will be of value to anyone with an interest in the history of science education in Britain.

Originally published in 1936 as the second instalment of McKenzie's School Certificate series, this book explains the physical properties of heat. The text is accompanied by multiple photographs, drawings and diagrams to illustrate key points, and every chapter concludes with several questions for students to reinforce the chapter content. This book will be of value to anyone with an interest in the history of science education in Britain.

This classic book, long out of print, investigates the experimental determination of one of the fundamental constants of astrophysics and its significance for astronomy. The equations of general relativity include a constant lambda in their solution. If lambda is non-zero and positive, this represents the existence of a phenomenon of cosmical repulsion. In this book Eddington discussed the implications of this for models of the universe. The book offers a unique sidelight upon the history of ideas and Eddington's artistry. His evident enjoyment of writing and exposition shine through, and astrophysicists and historians of science will find that this reissue throws fascinating light on one of Britain's greatest scientists.