The Hidden Worlds

In the 1870s, approximately 18,000 Mennonites migrated from the southern steppes of Imperial Russia (present-day Ukraine) to the North American grasslands. They brought with them an array of cultural and institutional features that indicated they were a "transplanted" people. What is less frequently noted, however, is that they created in their everyday lives a world that ensured their cultural longevity and social cohesiveness in a new land.Their adaptation to the New World required new concepts of social boundary and community, new strategies of land ownership and legacy, new associations, and new ways of interacting with markets. In Hidden Worlds, historian Royden Loewen illuminates some of these adaptations, which have been largely overshadowed by an emphasis on institutional history, or whose sources have only recently been revealed. Through an analysis of diaries, wills, newspaper articles, census and tax records, and other literature, an examination of inheritance practices, household dynamics, and gender relations, and a comparison of several Mennonite communities in the United States and Canada, Loewen uncovers the multi-dimensional and highly resourceful character of the 1870s migrants.

From deep within the human body to distant nebulae in outer space, there are worlds all around us that are smaller, faster, and farther than the unaided eye can see. In these thirty-six amazing images, you can see the invisible: from a white blood cell attacking E. coli bacteria, to the delicate splash from a falling drop of water captured by a high-speed strobe. With pictures that astound and fascinating explanations of how each image was captured, award-winning author Seymour Simon takes readers on a fantastic voyage that's truly out of sight.

FEATURES 44 FULL-PAGE COLOUR ILLUSTRATIONS!LET THIS JOURNAL BECOME YOUR GUIDE TO OTHER WORLDSLet it become your dream diary, your place where you record angel messages or speak to your own self, encouraging yourself to continue living fully, deeply and fearlessly. Here, you can ask the great questions. Ponder the purpose of life, who you are as a person, and who you are as a soul. Challenge reality and contemplate the soul-reason for the connections you make. Delve deeper, explore it all and revel in the exquisite freedom you have here! Let this journal be your friend, your mentor, and a very safe confidante to whom you can entrust your secrets, your aspirations and the whole of your authentic, beautiful self.220 pages. Size: 18 cm (w) x 23.5 cm (h)

No one has ever seen a quark. Yet physicists seem to know quite a lot about the properties and behavior of these ubiquitous elementary particles. Here a top researcher introduces us to a fascinating but invisible realm that is part of our everyday life. Timothy Smith tells us what we know about quarks--and how we know it. Though the quarks that make science headlines are typically laboratory creations generated under extreme conditions, most quarks occur naturally. They reside in the protons and neutrons that make up almost all of the universe's known matter, from human DNA to distant nebulae, from books and tables to neutron stars. Smith explains what these quarks are, how they act, and why physicists believe in them sight unseen. How do quarks arrange themselves? What other combinations can nature make? How do quarks hold nuclei together? What else is happening in their hidden worlds? It turns out that these questions can be answered using a few simple principles, such as the old standby: opposites attract. With these few principles, Smith shows how quarks dance around each other and explains what physicists mean when they refer to "up" and "down" quarks and talk about a quark's color, flavor, and spin. Smith also explains how we know what we know about these oddly aloof particles, which are eternally confined inside larger particles. He explains how quark experiments are mounted and how massive accelerators, targets, and detectors work together to collect the data that scientists use to infer what quarks are up to. A nonmathematical tour of the quark world, this book is written for students, educators, and all who enjoy scientific exploration--whether they seek a taste of subnuclear physics or just wonder about nature on the smallest of scales.

Four seventh graders solve a threatening environmental issue with the help of their power animals.

With its emphasis on the history and philosophical foundations of physics, this book will interest lay readers as well as students and professionals. The distinguished author discusses pioneers in the field, including Pauli, Einstein, Bohr, and de Broglie. Topics include hidden-variable and causal theories, pilot wave, and Schrödinger's equation. 2013 edition.

President Theodore Roosevelt called Jacob Riis "the best American I ever knew." The pioneering photojournalist, an immigrant from Denmark, drew attention to the poverty and evils of slum life in the late 1800s. Riis won national acclaim when his photos illustrated his bestselling book How the Other Half Lives. The book focused on the difficult time immigrants faced as thousands of newcomers flooded into the United States each year. Riis called for reform and hoped to prod government officials to help the poor people who were forced to live under horrible conditions. The impact of Riis' photos came from capturing the poor and homeless as they lived and worked, with the subjects' eyes often staring directly into the camera. The great photographer Ansel Adams called them "magnificent achievements in the field of humanistic photography." But the reforms that came from Riis' work have not eliminated urban poverty and homelessness, and important work remains to be done.

There are hidden worlds in nature-places you can visit only with a microscope. For more than twenty-five years, Dennis Kunkel has been exploring these worlds. Through the lenses of powerful microscopes, he has examined objects most people have never