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Author: Geoff McNamara Publisher: Springer Science & Business Media ISBN: 038776562X Category : Science Languages : en Pages : 192
Book Description
Pulsars are rapidly spinning neutron stars, the collapsed cores of once massive stars that ended their lives as supernova explosions. In this book, Geoff McNamara explores the history, subsequent discovery and contemporary research into pulsar astronomy. The story of pulsars is brought right up to date with the announcement in 2006 of a new breed of pulsar, Rotating Radio Transients (RRATs), which emit short bursts of radio signals separated by long pauses. These may outnumber conventional radio pulsars by a ratio of four to one. Geoff McNamara ends by pointing out that, despite the enormous success of pulsar research in the second half of the twentieth century, the real discoveries are yet to be made including, perhaps, the detection of the hypothetical pulsar black hole binary system by the proposed Square Kilometre Array - the largest single radio telescope in the world.
Author: Geoff McNamara Publisher: Springer Science & Business Media ISBN: 038776562X Category : Science Languages : en Pages : 192
Book Description
Pulsars are rapidly spinning neutron stars, the collapsed cores of once massive stars that ended their lives as supernova explosions. In this book, Geoff McNamara explores the history, subsequent discovery and contemporary research into pulsar astronomy. The story of pulsars is brought right up to date with the announcement in 2006 of a new breed of pulsar, Rotating Radio Transients (RRATs), which emit short bursts of radio signals separated by long pauses. These may outnumber conventional radio pulsars by a ratio of four to one. Geoff McNamara ends by pointing out that, despite the enormous success of pulsar research in the second half of the twentieth century, the real discoveries are yet to be made including, perhaps, the detection of the hypothetical pulsar black hole binary system by the proposed Square Kilometre Array - the largest single radio telescope in the world.
Author: James Jespersen Publisher: Courier Corporation ISBN: 0486409139 Category : Science Languages : en Pages : 322
Book Description
Clear and accessible introduction to the concept of time examines measurement, historic timekeeping methods, uses of time information, role of time in science and technology, and much more. Over 300 illustrations.
Author: Lutz Hüwel Publisher: Morgan & Claypool Publishers ISBN: 1681741601 Category : Science Languages : en Pages : 239
Book Description
Of Clocks and Time takes readers on a five-stop journey through the physics and technology (and occasional bits of applications and history) of timekeeping. On the way, conceptual vistas and qualitative images abound, but since mathematics is spoken everywhere the book visits equations, quantitative relations, and rigorous definitions are offered as well. The expedition begins with a discussion of the rhythms produced by the daily and annual motion of sun, moon, planets, and stars. Centuries worth of observation and thinking culminate in Newton's penetrating theoretical insights since his notion of space and time are still influential today. During the following two legs of the trip, tools are being examined that allow us to measure hours and minutes and then, with ever growing precision, the tiniest fractions of a second. When the pace of travel approaches the ultimate speed limit, the speed of light, time and space exhibit strange and counter-intuitive traits. On this fourth stage of the journey, Einstein is the local tour guide whose special and general theories of relativity explain the behavior of clocks under these circumstances. Finally, the last part of the voyage reverses direction, moving ever deeper into the past to explore how we can tell the age of "things" - including that of the universe itself.
Author: Laurel Thatcher Ulrich Publisher: Oxford University Press ISBN: 0199382298 Category : History Languages : en Pages : 281
Book Description
In a world obsessed with the virtual, tangible things are once again making history. Tangible Things invites readers to look closely at the things around them, ordinary things like the food on their plate and extraordinary things like the transit of planets across the sky. It argues that almost any material thing, when examined closely, can be a link between present and past. The authors of this book pulled an astonishing array of materials out of storage--from a pencil manufactured by Henry David Thoreau to a bracelet made from iridescent beetles--in a wide range of Harvard University collections to mount an innovative exhibition alongside a new general education course. The exhibition challenged the rigid distinctions between history, anthropology, science, and the arts. It showed that object-centered inquiry inevitably leads to a questioning of categories within and beyond history. Tangible Things is both an introduction to the range and scope of Harvard's remarkable collections and an invitation to reassess collections of all sorts, including those that reside in the bottom drawers or attics of people's houses. It interrogates the nineteenth-century categories that still divide art museums from science museums and historical collections from anthropological displays and that assume history is made only from written documents. Although it builds on a larger discussion among specialists, it makes its arguments through case studies, hoping to simultaneously entertain and inspire. The twenty case studies take us from the Galapagos Islands to India and from a third-century Egyptian papyrus fragment to a board game based on the twentieth-century comic strip "Dagwood and Blondie." A companion website catalogs the more than two hundred objects in the original exhibition and suggests ways in which the principles outlined in the book might change the way people understand the tangible things that surround them.
Author: Govert Schilling Publisher: Black Dog & Leventhal ISBN: 0762486511 Category : Science Languages : en Pages : 562
Book Description
This essential guide for every amateur astronomer explores the entire universe in one practical, easy-to-use, beginner-friendly handbook. The Astronomy Handbook, by award-winning astronomy writer Govert Schilling, is the indispensable, go-to guide to everything you ever wanted or need to know about space, including: the stars and the constellations planets comets eclipses galaxies black holes exoplanets and much more It also offers an excellent education for every amateur astronomer, including detailed and practical information on how to: locate and track the movements of the constellations throughout the year view the planets and the cosmos select the best equipment to use, including telescopes and cameras photograph objects in space Schilling provides a fascinating history of astronomy, as well as clear and accessible explanations of binary, variable, and neutron stars; black holes and gamma-ray bursts; the formation and structure of galaxies; dark matter; and extraterrestrial life.The Astronomy Handbook is a primordial soup-to-nuts guide to the cosmos and an essential reference for every student of the universe.
Author: Julian Barbour Publisher: Oxford University Press ISBN: 0199881898 Category : Science Languages : en Pages : 385
Book Description
Richard Feynman once quipped that "Time is what happens when nothing else does." But Julian Barbour disagrees: if nothing happened, if nothing changed, then time would stop. For time is nothing but change. It is change that we perceive occurring all around us, not time. Put simply, time does not exist. In this highly provocative volume, Barbour presents the basic evidence for a timeless universe, and shows why we still experience the world as intensely temporal. It is a book that strikes at the heart of modern physics. It casts doubt on Einstein's greatest contribution, the spacetime continuum, but also points to the solution of one of the great paradoxes of modern science, the chasm between classical and quantum physics. Indeed, Barbour argues that the holy grail of physicists--the unification of Einstein's general relativity with quantum mechanics--may well spell the end of time. Barbour writes with remarkable clarity as he ranges from the ancient philosophers Heraclitus and Parmenides, through the giants of science Galileo, Newton, and Einstein, to the work of the contemporary physicists John Wheeler, Roger Penrose, and Steven Hawking. Along the way he treats us to enticing glimpses of some of the mysteries of the universe, and presents intriguing ideas about multiple worlds, time travel, immortality, and, above all, the illusion of motion. The End of Time is a vibrantly written and revolutionary book. It turns our understanding of reality inside-out.
Author: Mark Edward Dodson Publisher: Christian Sky, LLC ISBN: 9780976240204 Category : Religion Languages : en Pages : 188
Book Description
Why live under a pagan sky? For thousands of years, humankind has dwelled under a dome of stars that have been grouped and identified according to ancient superstitions. Today, the official star constellations pay homage to the pagan gods and goddesses of a dark and chaotic world, a world before Christ, and yet these are the constellations that scouting groups and school children all around the world have been encouraged to learn for hundreds of years. Now, for the first time, the sky has been mapped in accordance with easy-to-find star patterns that tell the stories of the Christian faith. No telescope required. No sophisticated instruments needed. After presenting a few simple but very effective techniques for finding your way through the sky at night, the author takes you on a tour of the Christian constellations. Using new constellations inspired by stories from the Bible, you will be able to locate stars, planets, star clusters, and galaxies during any time of the night and at any time of the year. If you have ever wanted to know more about God's grandest creation but have never felt comfortable learning about ancient pagan idols, then this book will provide you with a healthy fresh start.
Author: Geoff McNamara
Author: Geoff McNamara
Author: James Jespersen
Author: Lutz Hüwel
Author: Laurel Thatcher Ulrich
Author: William Wallace Payne
Author: Govert Schilling
Author: 
Author: Julian Barbour
Author: United States. National Bureau of Standards
Author: Mark Edward Dodson