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Comets are always very impressive phenomena. Their appearances at regular, but mostly irregular, times excite people who see them. Astronomers have the obvious advantage of being able to see more of comets, and to study them. Their enthusiasm is reflected in the 50 papers in this book, written by more than 90 experts. The reviews in this book clearly describe a landmark in the history of cometary studies. Knowledge gathered up to and including Comet Halley are presented in two volumes. The first volume is about general aspects of observing and studying comets, where they originate and how their evolution develops. The second volume goes into the details of what a comet is: the nucleus, the coma, cometary dust, plasmas and magnetic fields. The book ends with a reflection by Fred Whipple about Comets in the Post-Halley Era. The book discusses all aspects of comets and is therefore suitable for use in graduate level courses. All astronomers and geophysicists interested in comets will find very useful and well-presented information in this book.
Comets are always very impressive phenomena. Their appearances at regular, but mostly irregular, times excite people who see them. Astronomers have the obvious advantage of being able to see more of comets, and to study them. Their enthusiasm is reflected in the 50 papers in this book, written by more than 90 experts. The reviews in this book clearly describe a landmark in the history of cometary studies. Knowledge gathered up to and including Comet Halley are presented in two volumes. The first volume is about general aspects of observing and studying comets, where they originate and how their evolution develops. The second volume goes into the details of what a comet is: the nucleus, the coma, cometary dust, plasmas and magnetic fields. The book ends with a reflection by Fred Whipple about Comets in the Post-Halley Era. The book discusses all aspects of comets and is therefore suitable for use in graduate level courses. All astronomers and geophysicists interested in comets will find very useful and well-presented information in this book.
This is the story of George H. Mahon, a man who went to Congress in 1935, when the House Committee on Appropriations still allocated a small amount of money to buy military horses. Forty-four years later, when Mahon retired as Chairman of that same committee, the committee was debating funds to purchase a bomber capable of traveling at 2,000 miles an hour. With a career spanning nearly a half century-including almost the entire Cold War-Mahon grew from a West Texas country lawyer to one of the most powerful men in the US House of Representatives, serving twenty-two consecutive terms from 1935-1978. During his time in Congress, Mahon worked easily with the giants of government, enjoying the friendship and confidence of seven of the eight presidents with whom he served. He worked just as comfortably with his constituents in the Nineteenth Congressional District of Texas. Mahon served on several Congressional committees, but it is through his service on the House Appropriations Committee and the Subcommittee on Defense Appropriations that he had the greatest national impact. He often bragged that under his leadership the Subcommittee on Defense Appropriations was the most non-partisan committee in Congress. Mahon led the subcommittee with a strong but gentle hand that earned him the respect of all who served with him.
Gathering eggs, planting crops, feeding hogs: firsthand experience
of these grows more distant with each new generation. From 1914 to
1964, however, a West Texas farmer named William G. DeLoach quietly
recorded this life-style. He described weather, plantings,
harvests, births, and deaths in his diary. In doing so, he not only
chronicled the life changes that everyone experiences but also kept
a record of the developments taking place across the country and
around the world.
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