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This book tells the story of one of man's greatest intellectual adventures - how it came to be understood that light travels at a finite speed, so that when we look up at the stars we are looking back in time. From the ancient Greeks measuring the distance to the sun, to today's satellite navigation, the book offers a gripping historical journey.
This book is the second of a three-volume set introducing the history of scientific thought (including social and human science) and covers the Latin Middle Ages, the Renaissance period, and the 17th century. Combining general descriptions with extensive excerpts from original sources in English translation, it concentrates on ways of thinking and actual argumentation and not just on results and mistakes; questions of validity are primarily dealt with in the perspective of the time of the writing, not on that of the 21st century. The work is of great interest to historians of science and culture, students as well as seasoned workers – but also for amateurs willing to invest the necessary serious efforts.
The development of physical theory is one of our greatest intellectual achievements. Its products--the currently prevailing theories of physics, astronomy, and cosmology--have proved themselves to possess intrinsic beauty and to have enormous explanatory and predictive power. This anthology of primary readings chronicles the birth and maturation of five such theories (the heliocentric theory, the electromagnetic field theory, special and general relativity, quantum theory, and the big bang theory) in the words of the scientists who brought them to life. It is the first historical account that captures the rich substance of these theories, each of which represents a fascinating story of the interplay of evidence and insight--and of dialogue among great minds. Readers sit in with Copernicus, Kepler, and Galileo as they overturn the geocentric universe; observe the genius of Faraday and Maxwell as they "discover" the electromagnetic field; look over Einstein's shoulder as he works out the details of relativity; listen in as Einstein and Bohr argue for the soul of quantum mechanics in the Completeness Debate; and watch as Hubble and others reveal the history of the universe. The editors' approach highlights the moments of discovery that rise from scientific creativity, and the presentation humanizes the scientific process, revealing the extent to which great scientists were the first to consider the philosophical implications of their work. But, most significantly, the editors offer this as their central thesis: although each was ushered in by a revolution, and each contains counterintuitive elements that delayed its acceptance, these five theories exhibit a continuous rational development that has led them to a permanent place in the worldview of science. Accessible to the general reader yet sufficiently substantive that working scientists will find value in it, The Tests of Time offers an intimate look into how physical theory has been developed, by the brilliant people who have developed it.
The scope of daring concepts, and sweeping adventures that tested the skills of the brilliant team of Astroguardans Drake, Ford, and Barrett. They fight for the freedom and safety of the planet. and the entire solar system. as they go up againt the very forces that are tryin to end it. Less The famous scientific trio of Drake, Ford, and Barrett, challenged by the most ruthless aliens in all the universes, blasted off on an intergalactic search for defenses against the invaders of Earth and all her allies. World after world was visited, secret after secret unleashed, and turned to mighty weapons of intense force—and still the enemy seemed to grow in power and ferocity. Mighty battles between huge space armadas were but skirmishes in the galactic war, as the invincible aliens savagely advanced and the Earth team hurled bolt after bolt of pure ravening energy—until it appeared that the universe itself might end in one final flare of furious torrential power. As Earth's faster-than-light spaceship hung in the void between galaxies, Drake, Ford, and Barrett could see below them, like a vast shining horizon, the mass of stars that formed their own island universe. Whatever the problem, no matter how threatening the alien menace, the dynamic trio rise to the occasion!
About the Book Free of Faith IS AN ESSAY ABOUT THE USELESSNESS OF GOD ONE DISCOVERS WHEN MULLING OVER EVIL, LIFE, UNIVERSE, AND MORALITY. This essay first presents a personal experience of submission to God and religion, rejection of priesthood celibacy, and vanishing faith. This experience is prolonged by a philosophical approach to All-Without-God. Evil is the finitude of living beings. Origin and evolution of life do not require the existence of God. The history of the universe can be viewed independently of God. Men and women must acknowledge their human condition and assume their generational responsibility, which essentially consists in fighting the criminal evil that humans are responsible for. About the Author Michel Dessart devoted some part of his youth organizing Sunday meetings and holidays camps for young parishioners. Later, in his professional life, he was known as a fair leader, be it as a division chief or a director. He was involved in two strong communities, the purpose of which was to prepare their members for the Catholic priesthood. In the first, a university seminary, he obtained a bachelor’s degree in philosophy at the University of Louvain, with a thesis on Aristotle’s “Treatise on Soul”, which won the first prize of the Inter-University Contest in philosophy. In the second community, in Rome, he had to spend four years to study the Catholic theology. However, after two years, he quit because he refused to commit to the ecclesiastical celibacy. He taught in Belgian schools and undertook economic studies at the University of Liège. Then, as a researcher at the National Fund for Scientific Research, he studied the possibility conditions of a European monetary policy. His Ph.D. thesis in economics was crowned by the Royal Academy of Belgium. Recruited by a large bank in Brussels, he became an economic adviser in Côte d’Ivoire and Senegal. Then he joined an international institution in Washington D.C. He was a well-known consultant-trainer in many African countries. He authored several economic books and papers.
In Newton's classical mechanics, time played the role of a monotonically increasing evolution parameter. Einstein rejected the Newtonian concept and instead identified time as the fourth coordinate of a space-time four-vector. Today, scientists are considering different concepts of time as a means of resolving incompatibilities between relativity and quantum mechanics. Some view time as an emergent property of a system rather than a fundamental property, while others consider two temporal variables. The purpose of this book is to examine the role of time in modern physics so that the reader gains an increased awareness of time and its place in our understanding of nature.