The uses of time in astronomy - from pointing telescopes, coordinating and processing observations, predicting ephemerides, cultures, religious practices, history, businesses, determining Earth orientation, analyzing time-series data and in many other ways - represent a broad sample of how time is used throughout human society and in space. Time and its reciprocal, frequency, is the most accurately measurable quantity and often an important path to the frontiers of science. But the future of timekeeping is changing with the development of optical frequency standards and the resulting challenges of distributing time at ever higher precision, with the possibility of timescales based on pulsars, and with the inclusion of higher-order relativistic effects. The definition of the second will likely be changed before the end of this decade, and its realization will increase in accuracy; the definition of the day is no longer obvious. The variability of the Earth's rotation presents challenges of understanding and prediction. In this symposium speakers took a closer look at time in astronomy, other sciences, cultures, and business as a defining element of modern civilization. The symposium aimed to set the stage for future timekeeping standards, infrastructure, and engineering best practices for astronomers and the broader society. At the same time the program was cognizant of the rich history from Harrison's chronometer to today's atomic clocks and pulsar observations. The theoreticians and engineers of time were brought together with the educators and historians of science, enriching the understanding of time among both experts and the public.

How do people perceive time? This book presents a wealth of contemporary and classical research, including some of the history and philosophy of time perception. Influential internal clock-based models of time perception receive an in-depth but non-technical introduction and discussion. The role of cognition and emotion in perceiving time is also explored, as well as questions derived from time experience in daily life, such as why time seems to pass more quickly in one situation rather than another. Classical and modern research on timing in children is reviewed, as well as work on time perception and time experience in older people. Leading recent models of animal timing are also discussed in a non-mathematical way.

Learn how to use R to turn raw data into insight, knowledge, and understanding. This book introduces you to R, RStudio, and the tidyverse, a collection of R packages designed to work together to make data science fast, fluent, and fun. Suitable for readers with no previous programming experience, R for Data Science is designed to get you doing data science as quickly as possible. Authors Hadley Wickham and Garrett Grolemund guide you through the steps of importing, wrangling, exploring, and modeling your data and communicating the results. You'll get a complete, big-picture understanding of the data science cycle, along with basic tools you need to manage the details. Each section of the book is paired with exercises to help you practice what you've learned along the way. You'll learn how to: Wrangle—transform your datasets into a form convenient for analysis Program—learn powerful R tools for solving data problems with greater clarity and ease Explore—examine your data, generate hypotheses, and quickly test them Model—provide a low-dimensional summary that captures true "signals" in your dataset Communicate—learn R Markdown for integrating prose, code, and results

A Concise Geologic Time Scale: 2016 presents a summary of Earth's history over the past 4.5 billion years, as well as a brief overview of contemporaneous events on the Moon, Mars, and Venus. The authors have been at the forefront of chronostratigraphic research and initiatives to create an international geologic time scale for many years, and the charts in this book present the most up-to-date international standard, as ratified by the International Commission on Stratigraphy and the International Union of Geological Sciences. This book is an essential reference for all geoscientists, including researchers, students, and petroleum and mining professionals. The presentation is non-technical and illustrated with numerous colour charts, maps and photographs. - Presents a summary of Earth's history over the past 4.5 billion years - Includes a brief overview of contemporaneous events on the Moon, Mars, and Venus - Includes full-color figures including charts, stratigraphic profiles, and photographs to enhance understanding of each geologic period - Correlates regional geologic stages to the standard definitions approved by the International Commission on Stratigraphy - Offers an explanation of the methods used to create the time scale - 2017 PROSE Award Finalist in Earth Science

Scientists are proving what Tibetan monks knew all along: there are real benefits to the pursuit of mindfulness. The practice of meditation, which includes living in the moment and being in touch with your emotions, can change your body and brain, keeping them fit, flexible and resilient as you age. TIME's special edition offers: * Mindfulness tips for everyone, from the novice to the lifetime meditator* The latest research on mindfulness, heart health and sleep* How to bring mindfulness into your day without having to sit still on a cushion.

"Don't worry, be happy." Sounds simple enough, yet many encounter setbacks in their pursuit of happiness. What if we could definitively say: "If you do this, you will achieve a happier and healthier life?" What if we could unlock the key to happiness? Enter Science.In an all new special edition from TIME, The Science of Happiness: New Discoveries for a More Joyful Life, editors investigate exclusive, cutting-edge research from the Lee Kum Sheung Center for Health and Happiness. Focusing in on the debate surrounding whether or not there is a direct relationship between happiness and health, this special edition explores the factors that affect happiness in three outlined sections--mind, life and spirit--and considers aspects such as positivity, optimism, purpose, family, finance, spirituality, and gratitude, in order to examine happiness from different angles. Although the research included in The Science of Happiness is a work in progress, it is a step toward unlocking the key to happiness by grounding a cute catchphrase in fact and science.

An expert explores the riddle of subjective time, from why time speeds up as we grow older to the connection between time and consciousness.

Best Books of 2016 BOSTON GLOBE * THE ATLANTIC From the acclaimed bestselling author of The Information and Chaos comes this enthralling history of time travel—a concept that has preoccupied physicists and storytellers over the course of the last century. James Gleick delivers a mind-bending exploration of time travel—from its origins in literature and science to its influence on our understanding of time itself. Gleick vividly explores physics, technology, philosophy, and art as each relates to time travel and tells the story of the concept's cultural evolutions—from H.G. Wells to Doctor Who, from Proust to Woody Allen. He takes a close look at the porous boundary between science fiction and modern physics, and, finally, delves into what it all means in our own moment in time—the world of the instantaneous, with its all-consuming present and vanishing future.

- A unique exposition of the foundations of the quantum theory of black holes including the impact of string theory, the idea of black hole complementarily and the holographic principle bull; Aims to educate the physicist or student of physics who is not an expert on string theory, on the revolution that has grown out of black hole physics and string theory

The great scientific, astronomical and technological advances of the 20th century inspired the science fiction genre to imagine distant worlds and futures, far beyond the discoveries of the here and now. This book explores science fiction films, television series, novels and short stories--from Lost in Space (1965-1968) to Fringe (2008-2013) to the works of Isaac Asimov and Stephen Baxter--with a focus on their underlying concepts of physics and astronomy. Assessing accuracy and plausibility, the author considers the possibilities of solar system, interstellar and faster than light travel; intelligent planets, dark (anti-) matter, the multiverse and string theory, time travel, alternate universes, teleportation and replication, weaponry, force fields, extraterrestrial life, subatomic life, emotional robots, super-human and parapsychological powers, asteroid impacts, space colonies and many other topics.