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Kirkus Star Junior Library Guild Gold Selection Mark Weston’s high-interest story and Rebecca Evans’s colorful graphics make scientific discovery the coolest thing this side of Jupiter. More than two centuries before Einstein, using a crude telescope and a mechanical timepiece, Danish astronomer Ole Romer measured the speed of light with astounding accuracy. How was he able to do this when most scientists didn’t even believe that light traveled? Like many paradigm-shattering discoveries, Romer’s was accidental. Night after night he was timing the disappearance and reappearance of Jupiter’s moon Io behind the huge, distant planet. Eventually he realized that the discrepancies in his measurements could have only one explanation: Light had a speed, and it took longer to reach Earth when Earth was farther from Jupiter. All he needed then to calculate light’s speed was some fancy geometry.
How much do you know about the radiation all around you? Your electronic devices swarm with it; the sun bathes you in it. It's zooming at you from cell towers, microwave ovens, CT scans, mammogram machines, nuclear power plants, deep space, even the walls of your basement. You cannot see, hear, smell or feel it, but there is never a single second when it is not flying through your body. Too much of it will kill you, but without it you wouldn't live a year. From beloved popular science writer Bob Berman, Zapped tells the story of all the light we cannot see, tracing infrared, microwaves, ultraviolet, X-rays, gamma rays, radio waves and other forms of radiation from their historic, world-altering discoveries in the 19th century to their central role in our modern way of life, setting the record straight on health costs (and benefits) and exploring the consequences of our newest technologies. Lively, informative, and packed with fun facts and "eureka moments," Zapped will delight anyone interested in gaining a deeper understanding of our world.
For the past three decades, many history professors have allowed their biases to distort the way America’s past is taught. These intellectuals have searched for instances of racism, sexism, and bigotry in our history while downplaying the greatness of America’s patriots and the achievements of “dead white men.” As a result, more emphasis is placed on Harriet Tubman than on George Washington; more about the internment of Japanese Americans during World War II than about D-Day or Iwo Jima; more on the dangers we faced from Joseph McCarthy than those we faced from Josef Stalin. A Patriot’s History of the United States corrects those doctrinaire biases. In this groundbreaking book, America’s discovery, founding, and development are reexamined with an appreciation for the elements of public virtue, personal liberty, and private property that make this nation uniquely successful. This book offers a long-overdue acknowledgment of America’s true and proud history.
This book presents the life and personality, the scientific and philosophical work of Ludwig Boltzmann, one of the great scientists who marked the passage from 19th- to 20th-Century physics. His rich and tragic life, ending by suicide at the age of 62, is described in detail. A substantial part of the book is devoted to discussing his scientific and philosophical ideas and placing them in the context of the second half of the 19th century. The fact that Boltzmann was the man who did most to establish that there is a microscopic, atomic structure underlying macroscopic bodies is documented, as is Boltzmann's influence on modern physics, especially through the work of Planck on light quanta and of Einstein on Brownian motion. Boltzmann was the centre of a scientific upheaval, and he has been proved right on many crucial issues. He anticipated Kuhn's theory of scientific revolutions and proposed a theory of knowledge based on Darwin. His basic results, when properly understood, can also be stated as mathematical theorems. Some of these have been proved: others are still at the level of likely but unproven conjectures. The main text of this biography is written almost entirely without equations. Mathematical appendices deepen knowledge of some technical aspects of the subject.
This beautifully produced volume is the first to survey the Metropolitan Museum's world-renowned collection of European furniture. One hundred and three superb examples from the Museum's vast holdings are featured. They originated in workshops in England, France, Germany, Italy, the Netherlands, Austria, Russia, or Spain and date from the Renaissance to the late nineteenth century. A number of them belonged to such important historical figures as Pope Urban VIII, Louis XIV, Madame de Pompadour, and Napoleon. The selection includes chairs, tables, beds, cabinets, commodes, settees and sofas, bookcases and standing shelves, desks, fire screens, athéniennes, coffers, chests, mirrors and frames, showcases, and lighting equipment. There is also one purely decorative piece, a superb vase made for a Russian noble family who, according to one awestruck viewer, "owned all the malachite mines in the world." The makers of some of the objects are unknown, but most of the pieces can be identified by label, documentation, or style as the work of an outstanding European designer-craftsman, such as André-Charles Boulle, Thomas Chippendale, David Roentgen, or Karl Friedrich Schinkel.