Product Description: While the wheel itself has changed little over time, it has immeasurably altered the nature of transportation. This insightful volume examines the various wheeled conveyances that have been instrumental in agriculture and commercecarts and wagons, for instanceas well as those that have facilitated human travelcoaches, bicycles, cars, and buses, among others...read more

Product Description: At one time, the ability to travel was limited by the capacity of ones own two feet and the geographic barriers that divided one place from another. Ingenuity has led to increasingly sophisticated modes of transportation that have allowed humans to transcend physical and theoretical boundaries, via land, sea, and air...read more

Product Description: From our television sets to the magnets that dot our refrigerators, electricity and magnetism are ever-present in our everyday lives. Even aside from our modern technology, electrical charges can be found throughout naturethe most significant example being Earths magnetic field...read more

Product Description: While the atom is universally acknowledged as the basis for most branches of physics, the study of its constituent particles has illuminated significant new areas of research. The behavior of subatomic particles provides crucial information on the structure and nature of atomic nuclei, which in turn reveal much about energy, matter, and often the origins of the universe...read more

Product Description: The oft-referenced E = mc2 may perhaps be one of the worlds most famous equations, but it actually represents only one aspect of the complex branch of physics known as relativity. Together, relativity and quantum mechanics explain both the most cosmic and most elementary relationships and processes of the universe...read more

Product Description: The Sun is merely one of some 200 billion stars that make up the Milky Way. Even more mind-boggling, the Milky Way is a tiny speck, being only one of a billion galaxies in the universe. Packed with fascinating facts and stunning photography, this book examines the Galaxy that humans call home...read more

Product Description: The concept of space travel is widely understood today, but this wasnt the case during the mid 1900s. The United States and the former Soviet Union were locked in a race to be the first super power to send humans into space. This book details the history of manned spaceflight, from the development of rockets to the advent of space tourism...read more

Product Description: Presents an overview of the history of astronomy, discusses the tools and technology associated with it, profiles noted astronomers, and explores the effect of expanding astronomical knowledge on modern society.Title: Astronomical ObservationsAuthor: Gregersen, Erik (EDT)Publisher: Rosen Pub GroupPublication Date: 2009/12/20Number of Pages: 214Binding Type: LIBRARYLibrary of Congress: 200903610...read more