Moral stories, poems and about my unique life

Moral stories, poems and about my unique life. 10-year-old Sana Twinkle is the author of this book. She is studying in BGS National Public School, in Bengaluru, India. She intended to create this book with her passion of putting her imagination in the form of poems, stories and travel blogs. With the support of her loving parents: Mr. Twinkle Mathew and Mrs. Aju joseph, and the help of her cute little sister, Evana Twinkle, 'The Unseen Showers' was born. All pictures in this book were hand drawn by Sana and Evana.

Extensive air showers are a very unique phenomenon. In the more than six decades since their discovery by Auger and collaborators we have learned a lot about these extremely energetic events and gained deep insight into high-energy phenomena, particle physics and astrophysics. In this Tutorial, Reference Manual and Data Book Peter K. F. Grieder provides the reader with a comprehensive view of the phenomenology and facts of the various types of interactions and cascades, theoretical background, experimental methods, data evaluation and interpretation and air shower simulation. He discusses astrophysical aspects of the primary radiation and addresses remaining puzzling questions that cannot yet be answered. They remain as a challenge for present and future research in the field. The book is split into two volumes. Volume I deals mainly with the basic theoretical framework of the processes that determine an air shower and ends with a summary of ways and means to extract information from air shower observations on the primary radiation. It also presents a compilation of data of our current knowledge of the high energy portion of the primary spectrum and composition. Volume II contains mainly compilations of data of experimental and theoretical nature as well as predictions from simulations of individual air shower constituents. Also included are chapters dedicated exclusively to special processes and detection methods. Extensive up-to-date reference lists appear at the end of each chapter. Researchers and students working in the field of cosmic ray detection and astroparticle physics will appreciate finding this book in their library.

Radio telescopes have transformed our understanding of the Universe. Pulsars, quasars, Big Bang cosmology: all are discoveries of the new science of radio astronomy. Here, Francis Graham-Smith describes the birth, development, and maturity of radio astronomy, from the first discovery of cosmic radio waves to its present role as a major part of modern astronomy. Radio is part of the electromagnetic spectrum, covering infra-red, visible light, ultraviolet, X-rays, and gamma-rays, and Graham-Smith explains why it is that radio waves give us a unique view of the Universe. Tracing the development of radio telescopes he shows how each new idea in observing techniques has led to new discoveries, and looks at the ways in which radio waves are generated in the various cosmic sources, relating this to the radio world of mobile phones, radio and television channels, wireless computer connections, and remote car locks. Today a new generation of radio telescopes promises to extend our understanding of the Universe into further, as yet unknown, fields. Huge new radio telescopes are being built, such as the Atacama Large Millimetre Array (ALMA), Low Frequency Array for Radioastronomy (LOFAR), and the Square Kilometre Array (SKA). Radio telescopes on spacecraft such as the Cosmic Microwave Explorer (COBE) and Planck are tracing in minute detail the faint but universal radio signal from the expanding early Universe. Graham-Smith shares the excitement of discovering the wonders of the radio universe, and the possibilities promised by the new age of giant radio telescopes.

Between 1942 and 1945, 1,051 amphibious tank-landing ships were rapidly produced. These were anonymous vessels, slow and unwieldy, and in the words of one crewmember, they looked like bathtubs. At first, LSTs had a reputation of being expendable and of relatively low value, and so were bestowed another, less noble, nickname; “Large Slow Targets.” Put into service to get troops and equipment ashore, the story of LST 479 is in some respects the story of all of these ships. Typical of all early LSTs, its crew on commissioning day, April 19, 1943, consisted of raw amateurs. But over the next 1,046 days, through collisions, accidental groundings, navigational errors, and lots of mechanical breakdowns, the 479 crew became sailors. Displaying heroism and ingenuity, they rescued the crew of a crippled landing craft during an Alaskan storm, battled fires aboard a burning LST hit by kamikazes, and fought off air attacks on the way to Makin and Guam, at Saipan, in the Philippines and around Okinawa. This LST crew became the embodiment of the Navy’s 2018 recruiting slogan: “Forged by the Sea.” In gripping, meticulously researched, “you are there” fashion, author William A. Gay, recounts the fascinating history of the 479’s seven Pacific campaigns; from the day-to-day life of the men aboard her, to their terrifying encounters in battle as they delivered “unseen body blows” to the enemy that helped win the war in the Pacific.

Find the Best Hikes and Backpacking Trips in California’s Sierra Nevada The rush of trekking through nature, the thrill of experiencing new places, the reward of discovering beautiful sights—all of this awaits in the Sierra Nevada. For more than 50 years, this definitive guidebook has led readers along the top trails between the mountain range’s northern boundary and the southern edge of Yosemite National Park. Now, with this revised and updated edition, let hiking experts Elizabeth Wenk and Mike White show you the way. Sierra North is the award-winning guide that features 80 meticulously selected trips, from new routes to old favorites. Traverse Hoover Wilderness, Ansel Adams Wilderness, Carson-Iceberg Wilderness, Emigrant Wilderness, Desolation Wilderness, and more. The trips are organized around major highways and roads, so it’s easy to choose your next adventure. Just pick an area, drive there, and go hiking. Inside you’ll find 80 trips that range from quick overnighters to 11-day excursions Complete trip details, including day-by-day trail descriptions, GPS waypoints, and elevation data 36 trailhead maps that show the routes for every trip Beginner tips and trusted advice on camping, fishing, and bear safety Information on side trips, geology, natural history, and more Planning your trip into the northern Sierra backcountry is easier than ever before. For additional hiking and backpacking opportunities, see the companion guide Sierra South. Both titles are recipients of a National Outdoor Book Award.