A masterpiece of technical exposition, it was the basic textbook of astronomy for more than a thousand years, and still is the main source for our knowledge of ancient astronomy. This translation, based on the standard Greek text of Heiberg, makes the work accessible to English readers in an intelligible and reliable form. It contains numerous corrections derived from medieval Arabic translations and extensive footnotes that take account of the great progress in understanding the work made in this century, due to the discovery of Babylonian records and other researches. It is designed to stand by itself as an interpretation of the original, but it will also be useful as an aid to reading the Greek text.

    Eat no meat from Monday through Friday. During the weekends, you're back to being a carnivore. Hill, who founded the eco-blog treehugger.com, has expanded the popular short talk he gave at TED 2010 with a life-changing digital book that explores the personal, economic, and societal benefits of moving meat out of your diet. Don't fear that vegetarian dishes all taste like sawdust. Hill includes great-tasting veggie recipes to get you started.

    We often overlook the historical link between mathematics and technological advances, says Stewart—but this connection is integral to any complete understanding of human history.Equations are modeled on the patterns we find in the world around us, says Stewart, and it is through equations that we are able to make sense of, and in turn influence, our world. Stewart locates the origins of each equation he presents—from Pythagoras's Theorem to Newton's Law of Gravity to Einstein's Theory of Relativity—within a particular historical moment, elucidating the development of mathematical and philosophical thought necessary for each equation's discovery. None of these equations emerged in a vacuum, Stewart shows; each drew, in some way, on past equations and the thinking of the day. In turn, all of these equations paved the way for major developments in mathematics, science, philosophy, and technology. Without logarithms (invented in the early 17th century by John Napier and improved by Henry Briggs), scientists would not have been able to calculate the movement of the planets, and mathematicians would not have been able to develop fractal geometry. The Wave Equation is one of the most important equations in physics, and is crucial for engineers studying the vibrations in vehicles and the response of buildings to earthquakes. And the equation at the heart of Information Theory, devised by Claude Shannon, is the basis of digital communication today.An approachable and informative guide to the equations upon which nearly every aspect of scientific and mathematical understanding depends, In Pursuit of the Unknown is also a reminder that equations have profoundly influenced our thinking and continue to make possible many of the advances that we take for granted.

    A very well written book that will be hard for anyone to put down!This is a must read.Jerry's interesting and riveting account of his childhood years and transition to a young adult and Infantry NCO are truly endearing! His honest and impelling novel reminds one of why we serve, fight, and are willing to lay down our lives for God, Country, and our fellow man. God Bless the Infantryman!!Thank the Lord for Soldiers and West Virginia !This book is a great read. This honest account of growing up in West Virginia and becoming a Sergeant in Vietnam is sometimes thrilling and sometimes heart wrenching. Through a lot of true grit, thank goodness Jerry Horton survived to tell this story. I highly recommend this book. It is a Winner.This is an inspiring memoir written about a young man coming of age in West Virginia in the 1960's. It is a memoir but also a real thriller story as we follow Jerry from the streets surrounding Lincoln playground to Chicago Steel mills to the French Quarter in New Orleans and to San Francisco in the Summer of Love 1967. The book then moves you to the Central Highlands in Vietnam where Jerry is an infantry platoon sergeant. Jerry's interesting and truthful account of his childhood years and transition to an adult and Infantry Sergeant are truly endearing. It is an honest and compelling story. It gives a first person narrative of hand-to-hand combat in the trenches of Vietnam that can leave you scared, glad to be alive and eternally grateful to those who died for our freedom. Jerry joined the army to simply be able to afford to go to college. Forty years later he has a PhD and multiple degrees but they were earned at a heavy price for this patriot. Jerry shares his experiences in Vietnam in an articulate, honest and direct assessment of his time in Vietnam, the men he served with and the horrors of war. It is an incredible story of leadership and survival.We see Jerry develop as a young boy who is very independent and then see him being schooled on the streets of Charleston, West Virginia learning how to come to grips with the breakup and divorce in his family. He takes refuge in becoming the best he could be as a basketball player on the courts of Lincoln playground. Later we see him leaving home for the mean streets of the Chicago Steel mills and then on to Louisiana where he completes one year of college and then goes flat broke. Then the book shifts to New Orleans Louisiana and the excitement of the French Quarter. Jerry's life is rocked by the turbulent waters in New Orleans; he had no money no plan and is drifting. He seeks out another lifestyle in California hitching to and then living in San Francisco during the Summer of Love 1967. He describes how it was, the music and time and place and he takes you there through his vivid descriptions. Once again, his life spins into turmoil and as he tries to get back on the path to achieve his life's dream of going to college he is drafted in the Army. He finds himself becoming a leader, an infantry sergeant. His goal is to bring himself and his men back home alive, the reader gets the sense that all his life Jerry has been prepared for this moment. The reader is taken through and sees through Jerry's eyes what combat is really like.This story covers much ground and has something for everyone. You live through Jerry 's experiences of what it's like to conquer your own demons, you read about his mother's courage having Jerry in the Salvation Army by herself, the excitement and freedom of the 1960's and you learn what it is like to want something so bad you lay your life down for it. It is a book you truly won't lay down once you start reading.

    The famous verse that gives the title to this book is about “love”—but not the ordinary love we know from novels and movies.Speak to us of Love gives a taste of a contemporary mystic at work, trying to disrupt our dreams, illusions, and the state of unconsciousness that prevents us from enjoying life to the fullest.This is about and for the millions of people in the world who have killed their love with their own hands, and who are now miserable. They never wanted to kill it, there was no intention to kill their love, but in their unconsciousness they started possessing. Husbands possess their wives, wives possess their husbands, and parents possess their children. Teachers are trying in every possible way to possess their students. Politicians are trying to possess countries. Religions are trying to possess millions of people and control every aspect their lives.This book shows that life can only thrive in freedom. Love never allows anyone to possess it, because love is our very soul.For Osho, the basis of all our neuroses or psychoses is simple: our souls are not nourished. Love, the basic nourishment, is missing. Osho comprehensively trounces the so-called religious and philosophical approaches to life. All that is of worth is to be found, not in the extraordinary, but in the ordinary; not in fantastical ideas of the “other world” beyond death, but in this very world that we find ourselves in here and now. In short, this book shows that making a simple yet utterly basic shift in our lives will awaken the silence in our beings and bring joy into our every moment.

    The universe is all about extremes, and in this engaging and thought-provoking book, astronomer Bryan Gaensler gives a whirlwind tour of the galaxies, with an emphasis on its fastest, hottest, heaviest, brightest, oldest, densest, and even loudest elements. From supernova explosions a billion times brighter than the sun to an asteroid the size of a beach ball, Extreme Cosmos offers a fascinating, fresh, and informed perspective of the remarkable richness of the universe, and the incredible physics that modern astronomy has revealed.

    Khushwant Singh tells the story of the land and its people from the earliest time to the present day. In broad, vivid sweeps he encapsulates the saga of the upheavals of a sub-continent over five millennia, and how their interplay over the centuries has molded the India of today. More, Khushwant Singh offers perceptive insights into everything Indian that may catch one's eye or arouse curiosity: its ethnic diversity, religions, customs, philosophy, art and culture, political currents, and the galaxy of men and women who have helped shape its intricately inlaid mosaic. He is also an enlightening guide to much else: India's extensive and varied architectural splendors, its art and classical literature. Khushwant Singh's own fascination with the subject is contagious, showing through on every page, and in every sidelight that he recounts. India: An Introduction holds strong appeal for just about anyone who has more than a passing interest in the country, Indians as well as those who are drawn to it from farther afield. And for a traveller, it is that rare companion: erudite, intelligent, lively

    There are deep connections between stars and atoms, between the cosmos and the microworld. Just six numbers, imprinted in the "big bang," determine the essential features of our entire physical world. Moreover, cosmic evolution is astonishingly sensitive to the values of these numbers. If any one of them were "untuned," there could be no stars and no life. This realization offers a radically new perspective on our universe, our place in it, and the nature of physical laws.

    Brilliantly simplifying the most complex ideas, Hawking & Black Holes will help you grasp the universe in ways you never thought possible.

    Lewellyn Powys called it "the greatest work of prose of the greatest period of English prose-writing," while the celebrated surgeon William Osler declared it the greatest of medical treatises. And Dr. Johnson, Boswell reports, said it was the only book that he rose early in the morning to read with pleasure. In this surprisingly compact and elegant new edition, Burton's spectacular verbal labyrinth is sure to delight, instruct, and divert today's readers as much as it has those of the past four centuries.

    Einstein's Heroes takes you on a journey of discovery about just such a miraculous language--the language of mathematics--one of humanity's mostamazing accomplishments. Blending science, history, and biography, this remarkable book reveals the mysteries of mathematics, focusing on the life and work of three of Albert Einstein's heroes: Isaac Newton, Michael Faraday, and especially James Clerk Maxwell, whose work directly inspired the theory of relativity. RobynArianrhod bridges the gap between science and literature, portraying mathematics as a language and arguing that a physical theory is a work of imagination involving the elegant and clever use of this language. The heart of the book illuminates how Maxwell, using the language of mathematics in a newand radical way, resolved the seemingly insoluble controversy between Faraday's idea of lines of force and Newton's theory of action-at-a-distance. In so doing, Maxwell not only produced the first complete mathematical description of electromagnetism, but actually predicted the existence of theradio wave, teasing it out of the mathematical language itself. Here then is a fascinating look at mathematics: its colorful characters, its historical intrigues, and above all its role as the uncannily accurate language of nature.

    Laughlin transports us two centuries into the future, when we've ceased to use carbon from the ground--either because humans have banned carbon burning or because fuel has simply run out. Boldly, Laughlin predicts no earth-shattering transformations will have taken place. Six generations from now, there will still be soccer moms, shopping malls, and business trips. Firesides will still be snug and warm.How will we do it? Not by discovering a magic bullet to slay our energy problems, but through a slew of fascinating technologies, drawing on wind, water, and fire. Powering the Future is an objective yet optimistic tour through alternative fuel sources, set in a world where we've burned every last drop of petroleum and every last shovelful of coal.The Predictable: Fossil fuels will run out. The present flow of crude oil out of the ground equals in one day the average flow of the Mississippi River past New Orleans in thirteen minutes. If you add the energy equivalents of gas and coal, it's thirty-six minutes. At the present rate of consumption, we'll be out of fossil fuels in two centuries' time. We always choose the cheapest gas. From the nineteenth-century consolidation of the oil business to the California energy crisis of 2000-2001, the energy business has shown, time and again, how low prices dominate market share. Market forces--not green technology--will be the driver of energy innovation in the next 200 years. The laws of physics remain fixed. Energy will still be conserved, degrade entropically with use, and have to be disposed of as waste heat into outer space. How much energy a fuel can pack away in a given space is fixed by quantum mechanics--and if we want to keep flying jet planes, we will need carbon-based fuels. The Potential: Animal waste. If dried and burned, the world's agricultural manure would supply about one-third as much energy as all the coal we presently consume. Trash. The United States disposes of 88 million tons of carbon in its trash per year. While the incineration of waste trash is not enough to contribute meaningfully to the global demand for energy, it will constrain fuel prices by providing a cheap supply of carbon. Solar energy. The power used to light all the cities around the world is only one-millionth of the total power of sunlight pouring down on earth's daytime side. And the amount of hydropump storage required to store the world's daily electrical surge is equal to only eight times the volume of Lake Mead. PRAISE FOR ROBERT B. LAUGHLIN -Perhaps the most brilliant theoretical physicist since Richard Feynman---George Chapline, Lawrence Livermore National Laboratory -Powerful but controversial.--- Financial Times -[Laughlin's] company ... is inspirational.- --New Scientist

    Relativity and quantum physics touch the very basis of physical reality, altering our commonsense notions of space and time, cause and effect. Both have reputations for complexity. But the basic ideas behind relativity and quantum physics are, in fact, simple and comprehensible by anyone. As Professor Wolfson points out, the essence of relativity can be summed up in a single sentence: The laws of physics are the same for all observers in uniform motion. The same goes for quantum theory, which is based on the principle that the "stuff " of the universe-matter and energy-is not infinitely divisible but comes in discrete chunks called "quanta." Profound ... Beautiful ... Relevant Why should you care about these landmark theories? Because relativity and quantum physics are not only profound and beautiful ideas in their own right, they are also the gateway to understanding many of the latest science stories in the media. These are the stories about time travel, string theory, black holes, space telescopes, particle accelerators, and other cutting-edge developments. Consider these ideas: Although Einstein's theory of general relativity dates from 1914, it has not been possible to test certain predictions until recently. The Hubble Space Telescope is providing some of the most striking confirmations of the theory, including certain evidence for the existence of black holes, objects that warp space and time so that not even light can escape. Also, the expansion of the universe predicted by the theory of general relativity is now a known rate. General relativity also predicts an even weirder phenomenon called "wormholes" that offer shortcuts to remote reaches of time and space. According to Einstein's theory of special relativity, two twins would age at different rates if one left on a high-speed journey to a distant star and then returned. This experiment has actually been done, not with twins, but with an atomic clock flown around the world. Another fascinating experiment confirming that time slows as speed increases comes from measuring muons at the top and bottom of mountains. A seemingly absurd consequence of quantum mechanics, called "quantum tunneling," makes it possible for objects to materialize through impenetrable barriers. Quantum tunneling happens all the time on the subatomic scale and plays an important role in electronic devices and the nuclear processes that keep the sun shining. Some predictions about the expansion of the universe were so odd that Einstein himself tried to rewrite the mathematics in order to eliminate them. When Hubble discovered the expansion of the universe, Einstein called the revisions the biggest mistake he had ever made. An intriguing thought experiment called "Schrödinger's cat" suggests that a cat in an enclosed box is simultaneously alive and dead under experimental conditions involving quantum phenomena. From Aristotle to the Theory of Everything Professor Wolfson begins with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics. Then he outlines the logic that led to Einstein's theory of special relativity, and the simple yet far-reaching insight on which it rests. With that insight in mind, you move on to consider Einstein's theory of general relativity and its interpretation of gravitation in terms of the curvature of space and time. Professor Wolfson then shows how inquiry into matter at the atomic and subatomic scales led to quandaries that are resolved-or at least clarified-by quantum mechanics, a vision of physical reality so at odds with our experience that it nearly defies language. Bringing relativity and quantum mechanics into the same picture leads to hypotheses about the origin, development, and possible futures of the entire universe, and the possibility that physics can produce a "theory of everything" to account for all aspects of the physical world. Fascinating Incidents and Ideas Along the way, you'll explore these fascinating incidents and ideas: In the 1880s, Albert Michelson and Edward Morley conducted an experiment to determine the motion of the Earth relative to the ether, which was a supposedly imponderable substance pervading all of space. You'll learn about their experiment, its shocking result, and the resulting theoretical crisis. In 1905, a young Swiss patent clerk named Albert Einstein resolved the crisis by discarding the ether concept and asserting the principle of relativity-that the laws of physics are the same for all observers in uniform motion. Relativity implies that the time order of events can be different in different reference frames. Does this wreak havoc with cause and effect? And why does Einstein assert that nothing can go faster than light? Shortly after publishing his 1905 paper on special relativity, Einstein realized that his theory required a fundamental equivalence between mass and energy, which he expressed in the equation E=mc2. Among other things, this famous formula means that the energy contained in a single raisin could power a large city for a whole day. Historically, the path to general relativity followed Einstein's attempt to incorporate gravity into relativity theory, which led to his understanding of gravity not as a force, but as a local manifestation of geometry in curved spacetime. Quantum theory places severe limits on our ability to observe nature at the atomic scale because it implies that the act of observation necessarily disturbs the thing that is being observed. The result is Werner Heisenberg's famous "uncertainty principle." Are quarks, the particles that make up protons and neutrons, the truly elementary particles? What are the three fundamental forces that physicists identify as holding particles together? Could they be manifestations of a single, universal force? A Teaching Legend On his own Middlebury College campus, Professor Wolfson is a teaching legend with an infectious enthusiasm for his subject and a knack for conveying difficult concepts in a way that fosters true understanding. He is the author of an introductory text on physics, a contributor to the esteemed publication Scientific American, and a specialist in interpreting science for the nonspecialist. In this course, Professor Wolfson uses extensive illustrations and diagrams to help bring to life the theories and concepts that he discusses. Thus we highly recommend our DVD version, although Professor Wolfson is mindful of our audio students and carefully describes visual materials throughout his lectures. Professor Richard Wolfson on the Second Edition of Einstein's Relativity: "The first version of this course was produced in 1995. In this new version, I have chosen to spend more time on the philosophical interpretation of quantum physics, and on recent experiments relevant to that interpretation. I have also added a final lecture on the theory of everything and its possible implementation through string theory. The graphic presentations for the DVD version have also been extensively revised and enhanced. But the goal remains the same: to present the key ideas of modern physics in a way that makes them clear to the interested layperson."

    Her foster father, Sion Jenkins, who had just been appointed headteacher of the local boys' secondary school, was arrested and charged with the murder. In July 1998 he was convicted and sent to prison for life. The case went on to become one of the most controversial in British criminal justice history. After a momentous legal battle, in which there were altogether an unprecedented six court hearings, he was finally acquitted in February 2006. Jenkins was lambasted in newspaper and television reports. So the real facts of the case were buried under an avalanche of innuendo and misinformation. Now, for the first time, this book puts on record his version of what actually happened.

    However, according to Hofstadter, the formal system that underlies all mental activity transcends the system that supports it. If life can grow out of the formal chemical substrate of the cell, if consciousness can emerge out of a formal system of firing neurons, then so too will computers attain human intelligence. Gödel, Escher, Bach is a wonderful exploration of fascinating ideas at the heart of cognitive science: meaning, reduction, recursion, and much more.