Of Clocks and Time takes readers on a five-stop journey through the physics and technology (and occasional bits of applications and history) of timekeeping. On the way, conceptual vistas and qualitative images abound, but since mathematics is spoken everywhere the book visits equations, quantitative relations, and rigorous definitions are offered as well. The expedition begins with a discussion of the rhythms produced by the daily and annual motion of sun, moon, planets, and stars. Centuries worth of observation and thinking culminate in Newton's penetrating theoretical insights since his notion of space and time are still influential today. During the following two legs of the trip, tools are being examined that allow us to measure hours and minutes and then, with ever growing precision, the tiniest fractions of a second. When the pace of travel approaches the ultimate speed limit, the speed of light, time and space exhibit strange and counter-intuitive traits. On this fourth stage of the journey, Einstein is the local tour guide whose special and general theories of relativity explain the behavior of clocks under these circumstances. Finally, the last part of the voyage reverses direction, moving ever deeper into the past to explore how we can tell the age of "things" - including that of the universe itself.

"Only a wayfarer born under unruly stars would attempt to put into practice in our epoch of proliferating knowledge the Heraclitean dictum that men who love wisdom must be inquirers into very many things indeed.'" Thus begins this remarkable interdisciplinary study of time by a master of the subject. And while developing a theory of "time as conflict," J. T. Fraser does offer "many things indeed"--an enormous range of ideas about matter, life, death, evolution, and value.

Humanists, scientists, and artists collaborate to address the disjunctive temporalities of ecological crisis In 2016, Antarctica's Totten Glacier, formed some 34 million years ago, detached from its bedrock, melted from the bottom by warming ocean waters. For the editors of Timescales, this event captures the disjunctive temporalities of our era's-the Anthropocene's-ecological crises: the rapid and accelerating degradation of our planet's life-supporting environment established slowly over millennia. They contend that, to represent and respond to these crises (i.e., climate change, rising sea levels, ocean acidification, species extinction, and biodiversity loss) requires reframing time itself, making more visible the relationship between past, present, and future, and between a human life span and the planet's. Timescales' collection of lively and thought-provoking essays puts oceanographers, geophysicists, geologists, and anthropologists into conversation with literary scholars, art historians, and archaeologists. Together forging new intellectual spaces, they explore the relationship between geological deep time and historical particularity, between ecological crises and cultural expression, between environmental policy and social constructions, between restoration ecology and future imaginaries, and between constructive pessimism and radical (and actionable) hope. Interspersed among these essays are three complementary "etudes," in which artists describe experimental works that explore the various timescales of ecological crisis. Contributors: Jason Bell, Harvard Law School; Iemanja Brown, College of Wooster; Beatriz Cortez, California State U, Northridge; Wai Chee Dimock, Yale U; Jane E. Dmochowski, U of Pennsylvania; David A. D. Evans, Yale U; Kate Farquhar; Marcia Ferguson, U of Pennsylvania; OEmur Harmansah, U of Illinois at Chicago; Troy Herion; Mimi Lien; Mary Mattingly; Paul Mitchell, U of Pennsylvania; Frank Pavia, California Institute of Technology; Dan Rothenberg; Jennifer E. Telesca, Pratt Institute; Charles M. Tung, Seattle U.

As new networks of railways, steamships, and telegraph communications brought distant places into unprecedented proximity, previously minor discrepancies in local time-telling became a global problem. Vanessa Ogle's chronicle of the struggle to standardize clock times and calendars from 1870 to 1950 highlights the many hurdles that proponents of uniformity faced in establishing international standards. Time played a foundational role in nineteenth-century globalization. Growing interconnectedness prompted contemporaries to reflect on the annihilation of space and distance and to develop a global consciousness. Time-historical, evolutionary, religious, social, and legal-provided a basis for comparing the world's nations and societies, and it established hierarchies that separated "advanced" from "backward" peoples in an age when such distinctions underwrote European imperialism. Debates and disagreements on the varieties of time drew in a wide array of observers: German government officials, British social reformers, colonial administrators, Indian nationalists, Arab reformers, Muslim scholars, and League of Nations bureaucrats. Such exchanges often heightened national and regional disparities. The standardization of clock times therefore remained incomplete as late as the 1940s, and the sought-after unification of calendars never came to pass. The Global Transformation of Time reveals how globalization was less a relentlessly homogenizing force than a slow and uneven process of adoption and adaptation that often accentuated national differences.