Time is the crucial ingredient in history, and yet historians rarely talk about time as such. These essays offer new insight into the development of modern conceptions of time, from the Christian dating system (BC/AD or BCE/CE) to the idea of “modernity” as a new epoch in human history. Are the Gregorian calendar, world standard time, and modernity itself simply impositions of Western superiority? How did the idea of stages of history culminating in the modern period arise? Is time really accelerating? Can we—should we—try to move to a new chronological framework, one that reaches back to the origins of humans and forward away or beyond modernity? These questions go to the heart of what history means for us today. Time is now on the agenda.

In 1790, America was in enormous debt, having depleted what little money and supplies the country had during its victorious fight for independence. Before the nation's greatest asset, the land west of the Ohio River, could be sold it had to be measured out and mapped. And before that could be done, a uniform set of measurements had to be chosen for the new republic out of the morass of roughly 100,000 different units that were in use in daily life. Measuring America tells the fascinating story of how we ultimately gained the American Customary System—the last traditional system in the world—and how one man's surveying chain indelibly imprinted its dimensions on the land, on cities, and on our culture from coast to coast.

Measuring History complements the cases presented in Wise Social Studies Practices (Yeager & Davis, 2005). Yeager and Davis highlight the rich and ambitious teaching that can occur in the broad context of state-level testing. In this book, the chapter authors and I bring the particular state history tests more to the fore and examine how teachers are responding to them. At the heart of Measuring History are cases of classroom teachers in seven states (Florida, Kentucky, Michigan, New York, Texas, Mississippi, and Virginia) where new social studies standards and new, and generally high-stakes, state-level history tests are prominent. In these chapters, the authors describe and analyze the state’s testing efforts and how those efforts are being interpreted in the context of classroom practice. The results both support and challenge prevailing views on the efficacy of testing as a vehicle for educational reform. Catherine Horn (University of Houston) and I lay the groundwork for the case studies through a set of introductory chapters that examine the current environment, the research literature, and the technical qualities of history tests.

The notion of a superior ‘Germanic’ or ‘Nordic’ race was a central theme in Nazi ideology. But it was also a commonly accepted idea in the early twentieth century, an actual scientific concept originating from anthropological research on the physical characteristics of Europeans. The Scandinavian Peninsula was considered to be the historical cradle and the heartland of this ‘master race’. Measuring the Master Race investigates the role played by Scandinavian scholars in inventing this so-called superior race, and discusses how the concept stamped Norwegian physical anthropology, prehistory, national identity and the eugenics movement. It also explores the decline and scientific discrediting of these ideas in the 1930s as they came to be associated with the genetic cleansing of Nazi Germany. This is the first comprehensive study of Norwegian physical anthropology. Its findings shed new light on current political and scientific debates about race across the globe.

Measuring Up traces the high levels of poverty and inequality that Mexico faced in the mid-twentieth century. Using newly developed multidisciplinary techniques, the book provides a perspective on living standards in Mexico prior to the first measurement of income distribution in 1957. By offering an account of material living conditions and their repercussions on biological standards of living between 1850 and 1950, it sheds new light on the life of the marginalized during this period. Measuring Up shows that new methodologies allow us to examine the history of individuals who were not integrated into the formal economy. Using anthropometric history techniques, the book assesses how a large portion of the population was affected by piecemeal policies and flaws in the process of economic modernization and growth. It contributes to our understanding of the origins of poverty and inequality, and conveys a much-needed, long-term perspective on the living conditions of the Mexican working classes.

2022 NATIONAL INDIE EXCELLENCE AWARDS WINNER — HISTORY: GENERAL ". . . inherently interesting, unique, and highly recommended addition to personal, professional, community, college, and academic library Physics of Time & Scientific Measurement history collections, and supplemental curriculum studies lists.” —Midwest Book Review "A wonderful look into understanding and recording time, Orzel’s latest is appropriate for all readers who are curious about those ticks and tocks that mark nearly every aspect of our lives." —Booklist “A thorough, enjoyable exploration of the history and science behind measuring time.” —Foreword Reviews It’s all a matter of time—literally. From the movements of the spheres to the slipperiness of relativity, the story of science unfolds through the fascinating history of humanity’s efforts to keep time. Our modern lives are ruled by clocks and watches, smartphone apps and calendar programs. While our gadgets may be new, however, the drive to measure and master time is anything but—and in A Brief History of Timekeeping, Chad Orzel traces the path from Stonehenge to your smartphone. Predating written language and marching on through human history, the desire for ever-better timekeeping has spurred technological innovation and sparked theories that radically reshaped our understanding of the universe and our place in it. Orzel, a physicist and the bestselling author of Breakfast with Einstein and How to Teach Quantum Physics to Your Dog continues his tradition of demystifying thorny scientific concepts by using the clocks and calendars central to our everyday activities as a jumping-off point to explore the science underlying the ways we keep track of our time. Ancient solstice markers (which still work perfectly 5,000 years later) depend on the basic astrophysics of our solar system; mechanical clocks owe their development to Newtonian physics; and the ultra-precise atomic timekeeping that enables GPS hinges on the predictable oddities of quantum mechanics. Along the way, Orzel visits the delicate negotiations involved in Gregorian calendar reform, the intricate and entirely unique system employed by the Maya, and how the problem of synchronizing clocks at different locations ultimately required us to abandon the idea of time as an absolute and universal quantity. Sharp and engaging, A Brief History of Timekeeping is a story not just about the science of sundials, sandglasses, and mechanical clocks, but also the politics of calendars and time zones, the philosophy of measurement, and the nature of space and time itself. For those interested in science, technology, or history, or anyone who’s ever wondered about the instruments that divide our days into moments: the time you spend reading this book may fly, and it is certain to be well spent.

This book explores intelligence testing in the US through the career of Henry Herbert Goddard.