What is gravity? Nobody knows—and just about nobody knows that nobody knows. How something so pervasive can also be so mysterious, and how that mystery can be so wholly unrecognized outside the field of physics, is one of the greatest conundrums in modern science. But as award-winning author Richard Panek shows in this groundbreaking book, gravity is a cold case that we are closer to cracking than ever—and whose very investigation has yielded untold truths about the cosmos and humanity itself. Part scientific detective story, part meta­physical romp, The Trouble with Gravity is a revelation: the first in-depth, accessible study of this ubiquitous, elusive force. Gravity and our efforts to understand it, Panek reveals, have shaped not only the world we inhabit, but also our bodies, minds, and culture. Its influence can be seen in everything from ancient fables to modern furniture, Dante’s Inferno to the pratfalls of Laurel and Hardy, bipedalism to black holes. As we approach the truth about gravity, we should also be prepared to know both our universe and our­selves as never before.

    Learn about the two main vitamin groups and the major mineral elements. This free ebook, Nutrition: vitamins and minerals, looks at the two main groups of vitamins: the fat-soluble vitamins, A, D, E and K; and the water-soluble vitamins, the B group and vitamin C. It also examines the major mineral elements, and the importance of fluid balance in the body.

    How can we catch schools that cheat on standardized tests? How does Netflix know which movies you’ll like? What is causing the rising incidence of autism? As best-selling author Charles Wheelan shows us in Naked Statistics, the right data and a few well-chosen statistical tools can help us answer these questions and more.For those who slept through Stats 101, this book is a lifesaver. Wheelan strips away the arcane and technical details and focuses on the underlying intuition that drives statistical analysis. He clarifies key concepts such as inference, correlation, and regression analysis, reveals how biased or careless parties can manipulate or misrepresent data, and shows us how brilliant and creative researchers are exploiting the valuable data from natural experiments to tackle thorny questions.And in Wheelan’s trademark style, there’s not a dull page in sight. You’ll encounter clever Schlitz Beer marketers leveraging basic probability, an International Sausage Festival illuminating the tenets of the central limit theorem, and a head-scratching choice from the famous game show Let’s Make a Deal—and you’ll come away with insights each time. With the wit, accessibility, and sheer fun that turned Naked Economics into a bestseller, Wheelan defies the odds yet again by bringing another essential, formerly unglamorous discipline to life.

    The result is the most authoritative and scientifically accurate description of the revolutionary developments taking place in medicine, computers, artificial intelligence, nanotechnology, energy production, and astronautics.In all likelihood, by 2100 we will control computers via tiny brain sensors and, like magicians, move objects around with the power of our minds. Artificial intelligence will be dispersed throughout the environment, and Internet-enabled contact lenses will allow us to access the world's information base or conjure up any image we desire in the blink of an eye.Meanwhile, cars will drive themselves using GPS, and if room-temperature superconductors are discovered, vehicles will effortlessly fly on a cushion of air, coasting on powerful magnetic fields and ushering in the age of magnetism.Using molecular medicine, scientists will be able to grow almost every organ of the body and cure genetic diseases. Millions of tiny DNA sensors and nanoparticles patrolling our blood cells will silently scan our bodies for the first sign of illness, while rapid advances in genetic research will enable us to slow down or maybe even reverse the aging process, allowing human life spans to increase dramatically.In space, radically new ships—needle-sized vessels using laser propulsion—could replace the expensive chemical rockets of today and perhaps visit nearby stars. Advances in nanotechnology may lead to the fabled space elevator, which would propel humans hundreds of miles above the earth's atmosphere at the push of a button.But these astonishing revelations are only the tip of the iceberg. Kaku also discusses emotional robots, antimatter rockets, X-ray vision, and the ability to create new life-forms, and he considers the development of the world economy. He addresses the key questions: Who are the winner and losers of the future? Who will have jobs, and which nations will prosper?All the while, Kaku illuminates the rigorous scientific principles, examining the rate at which certain technologies are likely to mature, how far they can advance, and what their ultimate limitations and hazards are. Synthesizing a vast amount of information to construct an exciting look at the years leading up to 2100, Physics of the Future is a thrilling, wondrous ride through the next 100 years of breathtaking scientific revolution. (From the Hardcover Edition)(Duration: 15:39:15)

    Over the years their textbooks have introduced significant theoretical and pedagogical innovations in statics, dynamics, and mechanics of materials education. At the same time, their careful presentation of content, unmatched levels of accuracy, and attention to detail have made their texts the standard for excellence. The new Seventh Edition of Vector Mechanics for Engineers: Statics and Dynamics continues this tradition. The seventh edition is complemented by a media and supplement package that is targeted to address core course needs for both the student and the instructor.

    Whether you're a beginner, and avid student, or an armchair expert, you'll find plenty to stimulate you within this book.--book jacket

    Every time we cook, clean, take a shower, drive a car, use a solvent, such as fingernail polish remover, or perform any of the countless everyday activities that involve complex chemical reactions we're doing chemistry. You might even say that we're all participating in a grand chemistry experiment that started with the first human who mixed pigments to do a cave painting. Why do so many of us desperately resist learning chemistry when we're young? Maybe it has something to do with the way it's taught in school. Now there's a fun, easy way to learn basic chemistry. Whether you're studying chemistry in school and you're looking for a little help making sense of what's being taught in class, or you're just into learning new things for their own sake, Chemistry For Dummies gets you rolling with all the basics of matter and energy, atoms and molecules, acids and bases, and much more. In no time you'll:Understand atomic structure and function Use the Periodic Table of elements Know what happens when matter changes from one state to another Explore ionic and covalent bonding Get a handle on chemical reactions Perform simple chemistry calculations Understand acids, bases, pHs, antacids, and gases Make sense Boyle's Law, Avrogadro's Law and other key laws in chemistry Packed with examples of chemistry in action in everyday life, Chemistry For Dummies is a fascinating exploration of broad range of topics in chemistry, including:States of matter, from the macroscopic to the microscopic Understanding how the elements are arranged in the Periodic Table Nuclear chemistry, radioactivity and radioactive decay Positive and negative ions and ionic compounds Covalent bonding in covalent compounds Chemical reactions, chemical equilibrium, and electrochemistry The mole and how it's used to calculate chemical reactions Great serendipitous discoveries in chemistry Environmental chemistry Written in plain English and requiring only basic math, Chemistry For Dummies puts you on the fast track to mastering the basics of chemistry.

    Sowell reveals the general principles behind any kind of economy-capitalist, socialist, feudal, and so on. In readable language, he shows how to critique economic policies in terms of the incentives they create, rather than the goals they proclaim. With clear explanations of the entire field, from rent control and the rise and fall of businesses to the international balance of payments, this is the first book for anyone who wishes to understand how the economy functions.

    Through scrupulous research and vivid first-person reporting, The First Human reveals the perils and the promises of fossil hunting on a grand competitive scale.

    One heart. Two eyes. Ten fingers. You may think you know what makes up a human. But it turns out our bodies are full of surprises. What makes tears of joy different from tears of sadness?Why is a gut feeling so much smarter than you think?And why is 90% of you not even human?You may think you know the human body – heart, lungs, brain and bones – but your body is full of extraordinary mysteries that science is only just beginning to understand. This book, which accompanies a major new BBC TV programme, will change the way we think about our bodies.Doctors are in the business of keeping secrets, but medical confidentiality isn’t just about privacy, shame or discretion. It’s about vulnerability to exploitation. In this ground-breaking new book, the effervescent van Tulleken twins bring their knowledge and charm to the page to reveal just how well our bodies keep secrets from the things that want to exploit it: bacteria, viruses, fungi, parasites, larger predators and, crucially, other people. They uncover the remarkable stories behind the science we are not meant to know, on matters of life and death.Leading us through these revelations are tales of everyday miracles – the human stories that bind every one of us together through the universal stages of life. From the most extreme environments on Earth to the most extreme events, Chris and Xand reveal the incredible abilities every human shares. Arranged around the three themes of learning, survival and growth, this book shows the human body like never before.Combining cutting-edge science and technology with stunning photography that gives us a tantalising glimpse beneath our skin, the van Tullekens reveal the secrets that make very ordinary human body … extraordinary.

    A place 200 million years in the making.Long ago, our planet had only one gigantic land mass. Then something monumental happened. That supercontinent ruptured and seven different worlds were born. Each of those worlds - or continents - evolved, and continues to evolve, its own way of life. From the jungle of the Congo or the majestic Himalayas to the densely populated wilds of Europe or the comparatively isolated Australasia, Seven Worlds, One Planet explores the natural wonders that give each of our continents its distinct character. Following the animals that have made these iconic environments their home, it discovers spectacular wildlife stories that reveal what makes each of these seven worlds unique. With a foreword by Sir David Attenborough and over 250 breathtaking images, including stills from the BBC Natural History Unit’s spectacular footage, Seven Worlds, One Planet is a stunning exploration of the planet, and the worlds within it, that we call home.

    The top-selling CS review book written by students and IMGs who recently passed 100+ high-yield minicases by chief complaint 30 complete cases simulate the exam experience Contains new Patient Encounters, including telephone interviews Perfect for group or solo study YOUR COMPLETE CS SURVIVAL GUIDE FROM THE AUTHORS OF FIRST AID FOR THE USMLE STEP 1 INSIDER ADVICE FOR STEP 2 CS SUCCESS New miniguide shows US students and IMGs how best to use this book Revised by test veterans to reflect the 2005--2006 exam experience Each complete case features standardized patient checklists and a recommended clinical approach Minicases represent the major chief complaints and diagnoses seen on the Step 2 CS Proven strategies for the patient encounter and patient note High-yield, must-know facts on patient diagnosis and workup.

    Drawing from years of teaching modern physics to nonscientists, Wolfson explains in a lively, conversational style the simple principles underlying Einstein's theory.Relativity, Wolfson shows, gave us a new view of space and time, opening the door to questions about their flexible nature: Is the universe finite or infinite? Will it expand forever or eventually collapse in a "big crunch"? Is time travel possible? What goes on inside a black hole? How does gravity really work? These questions at the forefront of twenty-first-century physics are all rooted in the profound and sweeping vision of Albert Einstein's early twentieth-century theory. Wolfson leads his readers on an intellectual journey that culminates in a universe made almost unimaginably rich by the principles that Einstein first discovered.

    “I walk with a new spring in my step and I look at life through physics-colored eyes,” wrote one such fan. When Lewin’s lectures were made available online, he became an instant YouTube celebrity, and The New York Times declared, “Walter Lewin delivers his lectures with the panache of Julia Child bringing French cooking to amateurs and the zany theatricality of YouTube’s greatest hits.” For more than thirty years as a beloved professor at the Massachusetts Institute of Technology, Lewin honed his singular craft of making physics not only accessible but truly fun, whether putting his head in the path of a wrecking ball, supercharging himself with three hundred thousand volts of electricity, or demonstrating why the sky is blue and why clouds are white. Now, as Carl Sagan did for astronomy and Brian Green did for cosmology, Lewin takes readers on a marvelous journey in For the Love of Physics, opening our eyes as never before to the amazing beauty and power with which physics can reveal the hidden workings of the world all around us. “I introduce people to their own world,” writes Lewin, “the world they live in and are familiar with but don’t approach like a physicist—yet.” Could it be true that we are shorter standing up than lying down? Why can we snorkel no deeper than about one foot below the surface? Why are the colors of a rainbow always in the same order, and would it be possible to put our hand out and touch one? Whether introducing why the air smells so fresh after a lightning storm, why we briefly lose (and gain) weight when we ride in an elevator, or what the big bang would have sounded like had anyone existed to hear it, Lewin never ceases to surprise and delight with the extraordinary ability of physics to answer even the most elusive questions. Recounting his own exciting discoveries as a pioneer in the field of X-ray astronomy—arriving at MIT right at the start of an astonishing revolution in astronomy—he also brings to life the power of physics to reach into the vastness of space and unveil exotic uncharted territories, from the marvels of a supernova explosion in the Large Magellanic Cloud to the unseeable depths of black holes. “For me,” Lewin writes, “physics is a way of seeing—the spectacular and the mundane, the immense and the minute—as a beautiful, thrillingly interwoven whole.” His wonderfully inventive and vivid ways of introducing us to the revelations of physics impart to us a new appreciation of the remarkable beauty and intricate harmonies of the forces that govern our lives.

    It argues that evolution designed us both to teach and learn, and that the drive to learn is our most important instinct. It also reveals as fascinating insights about our adult capacities and how even young children -- as well as adults -- use some of the same methods that allow scientists to learn so much about the world. Filled with surprise at every turn, this vivid, lucid, and often funny book gives us a new view of the inner life of children and the mysteries of the mind.