Product Description: Ten exciting stories tell of the success and failures of many famous inventors and pilots in the quest for flight. Stories include: the first hot-air balloon to carry people, the Wright brothers and the first airplane, Charles Lindberghs nonstop flight from New York City to Paris, Amelia Earharts attempt at a round-the-world flight, breaking the sound barrier, and Felix Baumgartners skydive from space...read more

Product Description: From giant wings and hot air balloons to helicopters and rockets, learn how people made machines to soar in the sky and beyond.

Product Description: "Provides a historical overview of military technology, from the earliest weapons to medieval fortresses and to today's modern weapons and warfare strategies. Includes the progression of lock technology from skeleton keys to today's retinal scans"--Provided by publisher.

The Wright Brothers: The First to Fly was written to support the Common Core State Standards for English/Language Arts. Beautiful illustrations and period photographs, paired with carefully leveled text, share the story of the Wright brothers. A chart that shows when, which, and how far each brother flew is also included. CCSS English Language Arts Strands & Standards: Literacy.RI.1.9, Literacy.L.1.2

This book explores the science behind flight. It looks at topics such as how planes, helicopters, and balloons fly. It also looks at the concepts of gravity, streamlining, drag and thrust.

Product Description: Demonstrating the power of mathematical modelling in testing theoretical assumptions, this volume presents two studies of the development of spatial abilities among seven- to 16-year-old subjects. The emergence of two distinct groups of "good" and "poor" performers has implications for a number of issues, including those of continuity-discontinuity of development and gender differences...read more

A unique book with systematic and thorough coverage of HAP related issues, problems and solutions. Handbook of Broadband Communications from High Altitude Platforms provides a thorough overview and state of the art of the HAP enabling technologies, as well as describing recent research activities with most promising results. It outlines the roadmap for future development of HAPs. Focuses on placing HAPs in the perspective of current and future broadband wireless communication systems, providing the readers with an overview of the constraints affecting HAP-based broadband communications Provides a thorough overview of HAP enabling technologies, describes recent research activities with most promising results, and outlines the roadmap for future development of HAPs Covers enabling technologies and economics of HAP-based communication system including issues related to aeronautics, energetics, operating scenarios, applications and business modeling Examines the operating environment, advanced communication techniques for efficient radio link resource management, and suitable antennas Addresses multiplatform constellations, presenting the multiple HAP constellation planning procedure and discussing the networking implications of using multiple HAPs

Demonstrating the power of mathematical modelling in testing theoretical assumptions, this volume presents two studies of the development of spatial abilities among seven- to 16-year-old subjects. The emergence of two distinct groups of "good" and "poor" performers has implications for a number of issues, including those of continuity-discontinuity of development and gender differences.