Probing the Sky with Radio Waves PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Probing the Sky with Radio Waves PDF full book. Access full book title Probing the Sky with Radio Waves by Chen-Pang Yeang. Download full books in PDF and EPUB format.
Author: Chen-Pang Yeang
Publisher: University of Chicago Press
ISBN: 022603481X
Category : Science
Languages : en
Pages : 378
Get Book Here
Book Description
By the late nineteenth century, engineers and experimental scientists generally knew how radio waves behaved, and by 1901 scientists were able to manipulate them to transmit messages across long distances. What no one could understand, however, was why radio waves followed the curvature of the Earth. Theorists puzzled over this for nearly twenty years before physicists confirmed the zig-zag theory, a solution that led to the discovery of a layer in the Earth’s upper atmosphere that bounces radio waves earthward—the ionosphere. In Probing the Sky with Radio Waves, Chen-Pang Yeang documents this monumental discovery and the advances in radio ionospheric propagation research that occurred in its aftermath. Yeang illustrates how the discovery of the ionosphere transformed atmospheric science from what had been primarily an observational endeavor into an experimental science. It also gave researchers a host of new theories, experiments, and instruments with which to better understand the atmosphere’s constitution, the origin of atmospheric electricity, and how the sun and geomagnetism shape the Earth’s atmosphere. This book will be warmly welcomed by scholars of astronomy, atmospheric science, geoscience, military and institutional history, and the history and philosophy of science and technology, as well as by radio amateurs and electrical engineers interested in historical perspectives on their craft.
Author: Chen-Pang Yeang
Publisher: University of Chicago Press
ISBN: 022603481X
Category : Science
Languages : en
Pages : 378
Get Book Here
Book Description
By the late nineteenth century, engineers and experimental scientists generally knew how radio waves behaved, and by 1901 scientists were able to manipulate them to transmit messages across long distances. What no one could understand, however, was why radio waves followed the curvature of the Earth. Theorists puzzled over this for nearly twenty years before physicists confirmed the zig-zag theory, a solution that led to the discovery of a layer in the Earth’s upper atmosphere that bounces radio waves earthward—the ionosphere. In Probing the Sky with Radio Waves, Chen-Pang Yeang documents this monumental discovery and the advances in radio ionospheric propagation research that occurred in its aftermath. Yeang illustrates how the discovery of the ionosphere transformed atmospheric science from what had been primarily an observational endeavor into an experimental science. It also gave researchers a host of new theories, experiments, and instruments with which to better understand the atmosphere’s constitution, the origin of atmospheric electricity, and how the sun and geomagnetism shape the Earth’s atmosphere. This book will be warmly welcomed by scholars of astronomy, atmospheric science, geoscience, military and institutional history, and the history and philosophy of science and technology, as well as by radio amateurs and electrical engineers interested in historical perspectives on their craft.
Author: Curtis Peebles
Publisher:
ISBN: 9781626830219
Category : Research aircraft
Languages : en
Pages : 334
Get Book Here
Book Description
With the development of supersonic aircraft, the X-plane era ushered in a new and challenging phase of flight. Researchers found that much of the knowledge accumulated from the previous, subsonic flight era did not apply to the emerging supersonic aircraft. These turbojet-powered planes also outpaced the usefulness of the wind tunnel, previously an indispensible tool of aeronautic research.This book explores the development of the X-series research aircraft, the planes that helped bridge the gap between subsonic flight and hypersonic flight.
Author: Arthur Holland Michel
Publisher: HarperCollins
ISBN: 0544971663
Category : Technology & Engineering
Languages : en
Pages : 341
Get Book Here
Book Description
The fascinating history and unnerving future of high-tech aerial surveillance, from its secret military origins to its growing use on American citizens Eyes in the Sky is the authoritative account of how the Pentagon secretly developed a godlike surveillance system for monitoring America's enemies overseas, and how it is now being used to watch us in our own backyards. Whereas a regular aerial camera can only capture a small patch of ground at any given time, this system—and its most powerful iteration, Gorgon Stare—allow operators to track thousands of moving targets at once, both forwards and backwards in time, across whole city-sized areas. When fused with big-data analysis techniques, this network can be used to watch everything simultaneously, and perhaps even predict attacks before they happen. In battle, Gorgon Stare and other systems like it have saved countless lives, but when this technology is deployed over American cities—as it already has been, extensively and largely in secret—it has the potential to become the most nightmarishly powerful visual surveillance system ever built. While it may well solve serious crimes and even help ease the traffic along your morning commute, it could also enable far more sinister and dangerous intrusions into our lives. This is closed-circuit television on steroids. Facebook in the heavens. Drawing on extensive access within the Pentagon and in the companies and government labs that developed these devices, Eyes in the Sky reveals how a top-secret team of mad scientists brought Gorgon Stare into existence, how it has come to pose an unprecedented threat to our privacy and freedom, and how we might still capitalize on its great promise while avoiding its many perils.
Author: Johnny Acton
Publisher:
ISBN: 9780340819326
Category : Ballooning
Languages : en
Pages : 240
Get Book Here
Book Description
When Joe Kittinger finally came to a halt, he found himself in a paradoxical world of preternatural colour where the sun blazed from a sky as black as pitch. A few minutes on the very border of space were enough to persuade him to throw himself form his open gondola with relish.
Author: Lauren Gunderson
Publisher: Dramatists Play Service, Inc.
ISBN: 0822233800
Category : Drama
Languages : en
Pages : 65
Get Book Here
Book Description
THE STORY: When Henrietta Leavitt begins work at the Harvard Observatory in the early 1900s, she isn’t allowed to touch a telescope or express an original idea. Instead, she joins a group of women “computers,” charting the stars for a renowned astronomer who calculates projects in “girl hours” and has no time for the women’s probing theories. As Henrietta, in her free time, attempts to measure the light and distance of stars, she must also take measure of her life on Earth, trying to balance her dedication to science with family obligations and the possibility of love. The true story of 19th-century astronomer Henrietta Leavitt explores a woman’s place in society during a time of immense scientific discoveries, when women’s ideas were dismissed until men claimed credit for them. Social progress, like scientific progress, can be hard to see when one is trapped among earthly complications; Henrietta Leavitt and her female peers believe in both, and their dedication changed the way we understand both the heavens and Earth.
Author: Rodman Philbrick
Publisher: Scholastic Inc.
ISBN: 0545303877
Category : Juvenile Fiction
Languages : en
Pages : 228
Get Book Here
Book Description
This fast-paced action novel is set in a future where the world has been almost destroyed. Like the award-winning novel Freak the Mighty, this is Philbrick at his very best.It's the story of an epileptic teenager nicknamed Spaz, who begins the heroic fight to bring human intelligence back to the planet. In a world where most people are plugged into brain-drain entertainment systems, Spaz is the rare human being who can see life as it really is. When he meets an old man called Ryter, he begins to learn about Earth and its past. With Ryter as his companion, Spaz sets off an unlikely quest to save his dying sister -- and in the process, perhaps the world.
Author: Mark Charlton-Kings
Publisher: Lulu.com
ISBN: 1326742744
Category : Fiction
Languages : en
Pages : 398
Get Book Here
Book Description
This is the second book in the Dalton Family Trilogy, set in the Second World War. Adam and Juliette Dalton who own the old Somerville Estate (Revenge is Wild Justice - the first book)have become wealthy. Phil, their son joins the RAF as a Mosquito pilot while their daughter Jennifer is trained as an SIS intelligence agent sent to France. A serial killer has abused and murdered several young women near RAF stations, but the police fail to track him down. The Daltons and other RAF airmen take over the investigation. To protect children from the Blitz London school children are evacuated to safety in the country. The Porter family is sent to the Cotswolds where Derek (Del Boy)is billeted with the Daltons. There is a battle of wills between the 'giant' Adam and the 'Artful Dodger' Del Boy. Several threads of the story involving the main characters interweave against an accurate historical background, finally coming together. This crime thriller involves romance, hatred, murder, revenge and aviation.
Author: M. C. Night-Hawk (pseud.)
Publisher:
ISBN:
Category : World War, 1914-1918
Languages : en
Pages : 224
Get Book Here
Book Description
Comprised of sketches of the war in the air above France. Many of the sketches appeared in article form in the DAILY MAIL, THE WAR ILLUSTRATED, and FLYING per the author's foreword, dated London, Nov. 1918.
Author: Theresa B Tabak
Publisher: Naval Institute Press
ISBN: 1612510140
Category : History
Languages : en
Pages : 517
Get Book Here
Book Description
Dino A. Brugioni, author of the best-selling account of the Cuban Missile crisis, Eyeball to Eyeball, draws on his long CIA career as one of the world's premier experts on aerial reconnaissance to provide the inside story of President Dwight D. Eisenhower's efforts to use spy planes and satellites to gather intelligence. He reveals Eisenhower to be a hands-on president who, contrary to popular belief, took an active role in assuring that the latest technology was used to gather aerial intelligence. This previously untold story of the secret Cold War program makes full use of the author's firsthand knowledge of the program and of information he gained from interviews with important participants. As a founder and senior officer of the CIA's National Photographic Interpretation Center, Brugioni was a key player in keeping Eisenhower informed of developments, and he sheds new light on the president's contributions toward building an effective and technologically advanced intelligence organization. The book provides details of the president's backing of the U-2's development and its use to dispel the bomber gap and to provide data on Soviet missile and nuclear efforts and to deal with crises in the Suez, Lebanon, Chinese Off Shore Islands, Tibet, Indonesia, East Germany, and elsewhere. Brugioni offers new information about Eisenhower's order of U-2 flights over Malta, Cyprus, Toulon, and Israel and subsequent warnings to the British, French, and Israelis that the U.S. would not support an invasion of Egypt. He notes that the president also backed the development of the CORONA photographic satellite, which eventually proved the missile gap with the Soviet Union didn't exist, and a variety of other satellite systems that detected and monitored problems around the world. The unsung reconnaissance roles played by Jimmy Doolittle and Edwin Land are also highlighted in this revealing study of Cold War espionage.
Author: Priyamvada Natarajan
Publisher: Yale University Press
ISBN: 0300221126
Category : Science
Languages : en
Pages : 337
Get Book Here
Book Description
A theoretical astrophysicist explores the ideas that transformed our knowledge of the universe over the past century. The cosmos, once understood as a stagnant place, filled with the ordinary, is now a universe that is expanding at an accelerating pace, propelled by dark energy and structured by dark matter. Priyamvada Natarajan, our guide to these ideas, is someone at the forefront of the research—an astrophysicist who literally creates maps of invisible matter in the universe. She not only explains for a wide audience the science behind these essential ideas but also provides an understanding of how radical scientific theories gain acceptance. The formation and growth of black holes, dark matter halos, the accelerating expansion of the universe, the echo of the big bang, the discovery of exoplanets, and the possibility of other universes—these are some of the puzzling cosmological topics of the early twenty-first century. Natarajan discusses why the acceptance of new ideas about the universe and our place in it has never been linear and always contested even within the scientific community. And she affirms that, shifting and incomplete as science always must be, it offers the best path we have toward making sense of our wondrous, mysterious universe. “Part history, part science, all illuminating. If you want to understand the greatest ideas that shaped our current cosmic cartography, read this book.”—Adam G. Riess, Nobel Laureate in Physics, 2011 “A highly readable, insider’s view of recent discoveries in astronomy with unusual attention to the instruments used and the human drama of the scientists.”—Alan Lightman, author of The Accidental Universe and Einstein's Dream
