With plenty of engaging material, practice questions, and practical ideas, this updated edition contains everything your students need to succeed in Cambridge IGCSE biology.

    Written by Susan McMurry, the Study Guide and Solutions Manual provide answers and explanations to all in-text and end-of-chapter exercises.

    The book acts as a ready reckoner for students to brush up their basics and memorize important facts, figures, and concepts. About the Author: A P Bhardwaj A.P. Bhardwaj is an author-trainer-tutor for CLAT, SET, LSAT, and other law entrance examinations. He has authored more than 10 books for various competitive examinations. He is a regular contributor in the leading newspapers and monthly journals for all competitive examinations. He runs his own training institute named Innovation in Chandigarh.

    This is the only book in the world which is available with the 'Essay Checklist' and 'Latest Topics' for self- or classroom study.

    In 1905 an unknown 26-year-old clerk at the Swiss Patent Office, who had supposedly failed math in school, burst on to the scientific scene and swept away the hidebound theories of the day. The clerk, Albert Einstein, introduced a new and unexpected understanding of the universe and launched the two great revolutions of twentieth-century physics, relativity and quantum mechanics. The obscure origin and wide-ranging brilliance of the work recalled Isaac Newton’s “annus mirabilis” (miracle year) of 1666, when as a 23-year-old seeking safety at his family manor from an outbreak of the plague, he invented calculus and laid the foundations for his theory of gravity. Like Newton, Einstein quickly became a scientific icon--the image of genius and, according to Time magazine, the Person of the Century.The actual story is much more interesting. Einstein himself once remarked that “science as something coming into being ... is just as subjectively, psychologically conditioned as are all other human endeavors.” In this profile, the historian of science L. Randles Lagerstrom takes you behind the myth and into the very human life of the young Einstein. From family rifts and girlfriend troubles to financial hardships and jobless anxieties, Einstein’s early years were typical of many young persons. And yet in the midst of it all, he also saw his way through to profound scientific insights. Drawing upon correspondence from Einstein, his family, and his friends, Lagerstrom brings to life the young Einstein and enables the reader to come away with a fuller and more appreciative understanding of Einstein the person and the origins of his revolutionary ideas.About the cover image: While walking to work six days a week as a patent clerk in Bern, Switzerland, Einstein would pass by the famous "Zytglogge" tower and its astronomical clocks. The daily juxtaposition was fitting, as the relative nature of time and clock synchronization would be one of his revolutionary discoveries in the miracle year of 1905.

    The main objective of this book is to present circuit analysis in a clear, easy-to-understand manner, with many practical applications to interest the student. Each chapter opens with either historical sketches or career information on a subdiscipline of electrical engineering. This is followed by an introduction that includes chapter objectives. Each chapter closes with a summary of the key points and formulas. The authors present principles in an appealing and lucid step-by-step manner, carefully explaining each step. Important formulas are highlighted to help students sort out what is essential and what is not. Many pedagogical aids reinforce the concepts learned in the text so that students get comfortable with the various methods of analysis presented in the text.

    Railway Transpor tations and its Development 2. Railway Terminology 3. Railway Track 4. Stresses in Railway Track 5. Traction and Tractive Resistances 6. Rails 7. Rail Joints and Welding of Rails 8. Creep of Rails 9. Sleepers 10. Track Fittings and Fastenings 11. Ballast 12. Subgrade and Embankments 13. Track Alignments 14. Surveying 15. Geometric Design of the Track 16. Points and Crossings 17. Track Junctions 18. Stations and Yards 19. Equipment in Station Yards 20. Signaling and Control Systems 21. Interlocking of Signals and Points 22. Construction and Renewal of Track 23. Track Drainage 24. Conventional Maintenance of Track (or Manual Maintenance) 25. Railway Track Standards 26. Safety in Railways 27. Underground Railways and Tunnelling. PART- II MODERNIZATION OF RAILWAY TRACK AND FUTURE TRENDS 28. Modern Developments in Railways 29. Development of High and Super High Speeds 30. Modernization of Track for High Speeds 31. Modern Methods of Track Maintenance PART- III RAILWAY ADMINISTRATION, ECONOMICS AND FINANCE 32. Administration of Indian Railways 33. Railway Expenses, Rates and Fares 34. Material Management.

    New 'Consolidation' sections and questions designed to provide a link between GCSE and A-level feature in the text.At the end of each section there are many questions - ideal for consolidation and revision - mainly from past A-level examination papers. Over 15 of these past-paper questions have been added in the Fourth Edition. Answers are included.

    

    Combining intellectual biography and social history, Laura Fermi traces her husband's career from his childhood, when he taught himself physics, through his rise in the Italian university system concurrent with the rise of fascism, to his receipt of the Nobel Prize, which offered a perfect opportunity to flee the country without arousing official suspicion, and his odyssey to the United States.

    Master problem-solving using this manual's worked-out solutions for all the starred problems in the text.

    These books have been prepared strictly according to the latest syllabus. The salient features of PRACHI SCIENCE are: Informal interactive-style content divided into four sections, two each for Term-I and Term-II. Text supported with a large number of colorful pictures, diagrams and illustrations for better understanding of scientific concepts. Each topic ends with "So now you know"—a pointwise summary of the topics discussed in each section. A set of "Very Short—ONE WORD" answer type questions at the end of each section to understand the concept better. Book includes a number of Activities (as recommended in the syllabus) to encourage the students to learn through real life experiences. Each chapter ends with a wide variety of questions of different types with an objective to test the comprehension of the learners. In addition to these questions, a section on Value Based Questions (VBQ) and questions on Problem Solving Assessment (PSA) is also added. A PRACTICE PAPER for chapter-based assessment with large number of suggested topics for Group Discussion, Group Activities, Seminars etc. at the end of each chapter. Term-wise Model Test Papers for a continuous assessment of the students.

    But what is time, exactly? Do children experience it the same way adults do? Why does it seem to slow down when we’re bored and speed by as we get older? How and why does time fly?In this witty and meditative exploration, award-winning author and New Yorker staff writer Alan Burdick takes readers on a personal quest to understand how time gets in us and why we perceive it the way we do. In the company of scientists, he visits the most accurate clock in the world (which exists only on paper); discovers that “now” actually happened a split-second ago; finds a twenty-fifth hour in the day; lives in the Arctic to lose all sense of time; and, for one fleeting moment in a neuroscientist’s lab, even makes time go backward. Why Time Flies is an instant classic, a vivid and intimate examination of the clocks that tick inside us all.

    Now William Dunham gives them the attention they deserve.Dunham places each theorem within its historical context and explores the very human and often turbulent life of the creator — from Archimedes, the absentminded theoretician whose absorption in his work often precluded eating or bathing, to Gerolamo Cardano, the sixteenth-century mathematician whose accomplishments flourished despite a bizarre array of misadventures, to the paranoid genius of modern times, Georg Cantor. He also provides step-by-step proofs for the theorems, each easily accessible to readers with no more than a knowledge of high school mathematics.A rare combination of the historical, biographical, and mathematical, Journey Through Genius is a fascinating introduction to a neglected field of human creativity.

    This text covers the basics of emerging areas in power electronics and a broad range of topics such as power switching devices, conversion methods, analysis and techniques, and applications. Its unique approach covers the characteristics of semiconductor devices first, then discusses the applications of these devices for power conversions. Four main applications are included: flexible ac transmissions (FACTs), static switches, power supplies, dc drives, and ac drives. - New chapters - Including Ch. 9, Multilevel Inverters, Ch. 13, Flexible AC Transmission Systems, and Ch. 17, Gate Drive Circuits.', gives students the latest information available on these topics. - New sections throughout - Including Semiconductor Basics, State-Space Analysis of Regulators, Vector Controls, Stepper Motor Control and more, gives students the latest information available on these topics. - Well-written and easy-to-follow, helps students maintain interest in the text. - Numerous worked-out examples, demonstrates for students the applications of conversion techniques in design and analysis of converter cir