This essay by Copernicus (1473-1543), revolutionized the way we look at the earth's placement in the universe, and paved the way for many great scientists, including Galileo and Isaac Newton, whose theories stemmed from this model. Featuring a biography of Copernicus and an accessible, enlightening introduction, both written by the renowned physicist Stephen Hawking, On the Revolution of Heavenly Spheres provides a fascinating look at the theories which shaped our modern understanding of astronomy and physics.

    Dr. Langston discovered that these people had all used a tainted form of heroin. Using fetal tissue transplant, two of the addicts recovered, garnering world-wide press coverage. This is the story behind the headlines.

    By the author of Gorgon. 35,000

    She entered Ah-gwah-ching State Sanatorium at Walker, Minnesota, for what she thought would be a short stay. In January, her tuberculosis spread, and she nearly died. Her recovery required many months of bed rest and medical care.Marilyn loved to write, and the story of her three-year residency at the sanatorium is preserved in hundreds of letters that she mailed back home to her parents, who could visit her only occasionally and whom she missed terribly. The letters functioned as a diary in which Marilyn articulately and candidly recorded her reactions to roommates, medical treatments, Native American nurses, and boredom. She also offers readers the singular perspective of a bed-bound teenager, gossiping about boys, requesting pretty new pajamas, and enjoying Friday evening popcorn parties with other patients.Selections from this cache of letters are woven into an informative narrative that explores the practices and culture of a midcentury tuberculosis sanatorium and fills in long-forgotten details gleaned from recent conversations with Marilyn, who "graduated" from the sanatorium and went on to lead a full, productive life.

    Their conclusion stems from Svensmark's research which has shown the previously unsuspected role that cosmic rays play in creating clouds. During the last 100 years cosmic rays became scarcer because unusually vigorous action by the Sun batted away many of them. Fewer cosmic rays meant fewer clouds--and a warmer world. The theory, simply put here but explained in fascinating detail, emerges at a time of intense public and political concern about climate change. Motivated only by their concern that science must be trustworthy, Svensmark and Calder invite their readers to put aside their preconceptions about manmade global warming and look afresh at the role of Nature in this hottest of world issues.

    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.

    Captain Shore’s enthusiasm for firearms and especially for rifles led him to take every possible opportunity to try out different weapons, ammunition and methods of shooting. His interest was combined with sound common sense, and he would never countenance a rumour about a particular weapon or incident unless he was able to confirm it for himself.As a result everything in this book is based on his personal experience. In World War II Captain Shore took part in the British landings at D-Day, and fought in Normandy and northern Europe. He came across many different weapons in varying condition, some of the worst being those used by the Dutch and Belgian resistance fighters. He was keen to learn from experienced snipers and then to train others, and he became an officer sniping instructor at the British Army of the Rhine Training Centre.He shares a wealth of first-hand knowledge of different rifles, pistols, machine guns, ammunition, telescopes, binoculars and all the equipment a sniper should carry. This is not only an account of sniping in World War II but also a guide to all aspects of sniping based on personal knowledge and experience in training and battle. Illustrated heavily with photos, pictures and other illustrations of snipers, their weapons and their tactics.

    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.

    The Great Ideas of Classical Physics 2. Describing MotionA Break from Aristotle 3. Describing Ever More Complex Motion 4. Astronomy as a Bridge to Modern Physics 5. Isaac NewtonThe Dawn of Classical Physics 6. Newton QuantifiedForce and Acceleration 7. Newton and the Connections to Astronomy 8. Universal Gravitation 9. Newton's Third Law 10. Conservation of Momentum 11. Beyond NewtonWork and Energy 12. Power and the Newtonian Synthesis 13. Further DevelopmentsStatic Electricity 14. Electricity, Magnetism, and Force Fields 15. Electrical Currents and Voltage 16. The Origin of Electric and Magnetic Fields 17. Unification IMaxwell's Equations 18. Unification IIElectromagnetism and Light 19. Vibrations and Waves 20. Sound Waves and Light Waves 21. The Atomic Hypothesis 22. Energy in SystemsHeat and Thermodynamics 23. Heat and the Second Law of Thermodynamics 24. The Grand Picture of Classical Physics

    He looks at the difficult dialogue between science and religion; the conflict between our human desire for permanence and the impermanence of nature; the possibility that our universe is simply an accident; the manner in which modern technology has separated us from direct experience of the world; and our resistance to the view that our bodies and minds can be explained by scientific logic and laws. And behind all of these considerations is the suggestion—at once haunting and exhilarating—that what we see and understand of the world is only a tiny piece of the extraordinary, perhaps unfathomable whole.

    You may find it for free on the web. Purchase of the Kindle edition includes wireless delivery.

    Hugh Ross, astromomer, tells the fascinating story of how the latest research into origins not only has sealed the case for divine creation, but has revealed the identity of the Creator Himself.

    Two of the enemy soldiers, which we often referred to as gooks, quickly came after me. As I quickly mowed them down with my automatic rifle, I crawled backwards away from the enemy gunfire, using my helmet to push sand in front of me as I went, which made it possible to look behind me. But as I looked back, I realized that my safety net was no longer safe. I saw my entire company falling like dominoes. Medics were running left and right, risking their lives to help others with bravery that even the most amazing soldier couldn’t hope to match. Some of the events I witnessed during that moment were beyond comprehension. I watched a young, courageous black medic take an 81-millimeter round to his head, and his whole body instantly turned to smoke. Young nineteen and twenty year old kids were crying like children, but fighting like someone had raped their sisters. So many things were going through my head at that moment, and in one single heartbeat I was overwhelmed with a flashback of my entire life. This is my story, from point A to B, of my life and times in the midst of hell on Earth.”

    With an unswerving concern for every American soldier trapped by enemy fire, and a fearlessness that became legendary, Ron Alexander earned enough official praise to become the second most decorated helicopter pilot of the Vietnam era. Yet, for Ron, the real reward came from plucking his fellow soldiers from harm's way, giving them another chance to get home alive.In Taking Fire, Alexander and acclaimed military writer Charles Sasser transport you right into the cramped cockpit of a Huey on patrol, offering a bird's eye view of the Vietnam conflict. Packed with riveting action and gritty "you-are-there" dialogue, this outstanding book celebrates the everyday heroism of the chopper pilots of Vietnam.

    Here, for the first time, is the complete history of the quest to understand Earth’s magnetism—from the ancient Greeks’ fascination with lodestone, to the geological discovery that the North Pole has not always been in the North—and to the astonishing modern conclusions that finally revealed the true source.Richly illustrated and skillfully told, North Pole, South Pole unfolds the human story behind the science: that of the inquisitive, persevering, and often dissenting thinkers who unlocked the secrets at our planet’s core.