John Whitfield

Whitfield's Electrical Craft Principles, 6th edition is the second of a two-volume work that covers the electrical principles syllabi for all major awarding bodies such as BTEC, and City and Guilds. The book is fully illustrated throughout with line diagrams, photographs and drawings. Worked examples are included to aid understanding of the theories and principles presented in its pages. Each chapter concludes with a summary of formulae, a set of written exercises and a multiple-choice test, which makes the book ideal for both classroom and private study. The book will also be useful for practicing electrical installers, engineers and technicians who wish to deepen their knowledge and prepare themselves for the demands of a rapidly developing industry.

Whitfield's Electrical Craft Principles, 6th edition is the first of a two-volume work that covers the electrical principles syllabi for all major awarding bodies such as BTEC, and City and Guilds. The book is fully illustrated throughout with line diagrams, photographs and drawings. Worked examples are included to aid understanding of the theories and principles presented in its pages. Each chapter concludes with a summary of formulae, a set of written exercises and a multiple-choice test, which makes the book ideal for both classroom and private study. The book will also be useful for practicing electrical installers, engineers and technicians who wish to deepen their knowledge and prepare themselves for the demands of a rapidly developing industry.

Meet the incredible animals that have disappeared due to competition, mass extinctions, hunting, and human activity. Lost Animals brings back to life some of the most charismatic creatures to inhabit the planet. It captures the imagination with more than 200 incredible photographs, artworks of fossils, and scientific drawings of charming creatures like dodos, paraceratherium (the largest land mammal), spinosaurus (the biggest carnivorous dinosaur), placeoderm fishes (the sharks of their day), and more Lost Animals is a captivating documentation of evolution and extinction. Each chapter focuses on a specific time in Earth's history, from the Cambrian explosion (the most intense surge of evolution the world has ever experienced) to present times, with profiles of the key species that lived then. From long extinct animals to Lazarus species--animals that were thought to be extinct before being rediscovered--this book takes readers on a journey through Earth's natural history, highlighting the world's biggest animal losses and its moments of conservational hope.

Documenting the species that have emerged, disappeared and been reborn over the millennia since the Cambrian Explosion, Lost Animals is the story of life on Earth.

How to get a good reputation--deserved or not!--and why we care what other people thinkWhy does a fish only bite another fish if no one else is watching? Why do people overshare online? Why do some people meet trivial insults with extreme violence? Why do so many gods have multiple eyes? In "People Will Talk," science writer John Whitfield shows how reputation helps answer all of these questions, and more. What is the secret to getting get a good reputation? Unfortunately, there's more to reputation than being a good person or being good at what you do. Your reputation belongs to other people, and it's created by what they say about you behind your back. You have a good reputation only if you have a strong social network--a large and close-knit network of friends, family, and allies--to spread good news about you and shout down ugly rumors. If you've ever wondered why we care about the lives of celebrities, why young men publicly upload to the Internet pictures of themselves engaged in drunken or dangerous antics, how to make the "honor system" a little more widely honored, how to keep politicians honest, or what keeps gossip going, reputation will give you a clue.Almost from the moment we are born, we are trying to work out whom we can trust and trying to make others think the best of us. We carry on doing so throughout life, even when we don't realize it, every time we meet another person in business, friendship, or romance; every time we read celebrity gossip; and every time we tweak our Facebook profiles. Whether you're buying a car or selling one, looking for a job or hiring, asking someone out on a date or deciding whether to accept the invitation, reputation matters. Read "People Will Talk" and discover how to polish your own reputation, understand what you hear about others, and make the most of both.

This is the second of a two-volume work covering the electrical principles syllabuses of all of the major examining bodies including the City & Guilds of London Institute's electrical craft courses. It is also suitable for a wide range of other courses, including the first three years of the BTEC electrical series. Great care has been taken to ensure that the text fully covers the content of the syllabuses concerned, both as published and as interpreted by the examiners in the past. The book is well illustrated with almost 200 line diagrams and photographs. Theories are explained with the help of almost 100 worked examples, an important aid to understanding the practical applications, and there are more than 300 graded exercises for which numerical answers are provided as well as nearly 250 multiple choice questions with solutions. These features make the book ideal as a class text as well as being particularly suitable for private study. A complete list of symbols, abbreviations and units is included, along with eight tables of relevant data and introduction to SI units, this system being used throughout. Each chapter concludes with a summary of the formulas introduced in it. The book will also be useful to practicing technicians wishing to extend their grasp of electrical principles to meet the rapidly expanding requirements of the industry.

This is the first of a two-volume work covering the electrical principles syllabuses of all of the major examining bodies including the City & Guilds of London Institute's electrical craft courses. It is also suitable for a wide range of other courses, including the first three years of the BTEC electrical series. Great care has been taken to ensure that the text fully covers the content of the syllabuses concerned, both as published and as interpreted by the examiners in the past. The book is well illustrated with almost 200 line diagrams and photographs. Theories are explained with the help of almost 100 worked examples, an important aid to understanding the practical applications, and there are more than 300 graded exercises for which numerical answers are provided as well as nearly 250 multiple choice questions with solutions. These features make the book ideal as a class text as well as being particularly suitable for private study. A complete list of symbols, abbreviations and units is included, along with eight tables of relevant data and introduction to SI units, this system being used throughout. Each chapter concludes with a summary of the formulas introduced in it. The book will also be useful to practicing technicians wishing to extend their grasp of electrical principles to meet the rapidly expanding requirements of the industry.