This lively and entertaining history of the long struggle to measure the distance to the stars will appeal to general readers as well as to amateur and professional astronomers. Readers will encounter fascinating historical characters, from ancient Greeks to 19th-century scientists. Well illustrated, with contemporary pictures plus extensive notes on further reading. 2002 edition.

From #1 New York Times bestselling author Dava Sobel, the "inspiring" (People), little-known true story of women's landmark contributions to astronomy A New York Times Book Review Notable Book Named one of the best books of the year by NPR, The Economist, Smithsonian, Nature, and NPR's Science Friday Nominated for the PEN/E.O. Wilson Literary Science Writing Award "A joy to read.” —The Wall Street Journal In the mid-nineteenth century, the Harvard College Observatory began employing women as calculators, or “human computers,” to interpret the observations their male counterparts made via telescope each night. At the outset this group included the wives, sisters, and daughters of the resident astronomers, but soon the female corps included graduates of the new women's colleges—Vassar, Wellesley, and Smith. As photography transformed the practice of astronomy, the ladies turned from computation to studying the stars captured nightly on glass photographic plates. The “glass universe” of half a million plates that Harvard amassed over the ensuing decades—through the generous support of Mrs. Anna Palmer Draper, the widow of a pioneer in stellar photography—enabled the women to make extraordinary discoveries that attracted worldwide acclaim. They helped discern what stars were made of, divided the stars into meaningful categories for further research, and found a way to measure distances across space by starlight. Their ranks included Williamina Fleming, a Scottish woman originally hired as a maid who went on to identify ten novae and more than three hundred variable stars; Annie Jump Cannon, who designed a stellar classification system that was adopted by astronomers the world over and is still in use; and Dr. Cecilia Helena Payne, who in 1956 became the first ever woman professor of astronomy at Harvard—and Harvard’s first female department chair. Elegantly written and enriched by excerpts from letters, diaries, and memoirs, The Glass Universe is the hidden history of the women whose contributions to the burgeoning field of astronomy forever changed our understanding of the stars and our place in the universe.

In June 1792, amidst the chaos of the French Revolution, two intrepid astronomers set out in opposite directions on an extraordinary journey. Starting in Paris, Jean-Baptiste-Joseph Delambre would make his way north to Dunkirk, while Pierre-François-André Méchain voyaged south to Barcelona. Their mission was to measure the world, and their findings would help define the meter as one ten-millionth of the distance between the pole and the equator—a standard that would be used “for all people, for all time.” The Measure of All Things is the astonishing tale of one of history’s greatest scientific adventures. Yet behind the public triumph of the metric system lies a secret error, one that is perpetuated in every subsequent definition of the meter. As acclaimed historian and novelist Ken Alder discovered through his research, there were only two people on the planet who knew the full extent of this error: Delambre and Méchain themselves. By turns a science history, detective tale, and human drama, The Measure of All Things describes a quest that succeeded as it failed—and continues to enlighten and inspire to this day.

"A short, excellent account of [Leavitt’s] extraordinary life and achievements." —Simon Singh, New York Times Book Review George Johnson brings to life Henrietta Swan Leavitt, who found the key to the vastness of the universe—in the form of a “yardstick” suitable for measuring it. Unknown in our day, Leavitt was no more recognized in her own: despite her enormous achievement, she was employed by the Harvard Observatory as a mere number-cruncher, at a wage not dissimilar from that of workers in the nearby textile mills. Miss Leavitt’s Stars uncovers her neglected history.

A comprehensive reference and history book on what is measured and why. Measurement is one of humankind's oldest and most vital activities. By measuring height, speed, size, temperature, strength and many other factors, humans can compare, improve and progress. In fact, measurement is an essential tool for survival. A Measure of Everything is a wide-ranging and comprehensive guide to what is measured and why. The book begins when the basic measurements were as simple as more, less and enough. As societies evolved, relative measurements were no longer sufficient. Advances in language allowed more precise measurements. Short distances were measured in relation to parts of the human body. For example, the ancient measurement cubit was the length of a pharaoh's arm plus the width of his hand. As society and culture progress and change, so do measurements. The rise of astronomy and the sciences demanded more exact measurements. These measurements are typically named after the discovering scientist, e.g., henry, curie, watt, rutherford, fahrenheit. This book features 28 categories organized into three sections: Earth and Life Sciences: astronomy, distance, time, meteorology, medicine, and five others. Physical Sciences: chemistry, mathematics, physics, speed, weight, temperature, and three others. Technology and Leisure: computers, engineering, finance, food, textiles, and four others. A Measure of Everything is an informative and entertaining book that will appeal to a wide range of readers.

INSTANT NEW YORK TIMES BESTSELLER - The Read With Jenna Today Show Book Club Pick! "A story of love and hope as interweaving characters display: how all moments, big and small, can measure a life. If you want joy, love, romance, and hope—read with us." —Jenna Bush Hager A luminous, spirit-lifting blockbuster for readers of The Midnight Library. Eight ordinary people. One extraordinary choice. It seems like any other day. You wake up, pour a cup of coffee, and head out. But today, when you open your front door, waiting for you is a small wooden box. This box holds your fate inside: the answer to the exact number of years you will live. From suburban doorsteps to desert tents, every person on every continent receives the same box. In an instant, the world is thrust into a collective frenzy. Where did these boxes come from? What do they mean? Is there truth to what they promise? As society comes together and pulls apart, everyone faces the same shocking choice: Do they wish to know how long they’ll live? And, if so, what will they do with that knowledge? The Measure charts the dawn of this new world through an unforgettable cast of characters whose decisions and fates interweave with one another: best friends whose dreams are forever entwined, pen pals finding refuge in the unknown, a couple who thought they didn’t have to rush, a doctor who cannot save himself, and a politician whose box becomes the powder keg that ultimately changes everything. Enchanting and deeply uplifting, The Measure is a sweeping, ambitious, and invigorating story about family, friendship, hope, and destiny that encourages us to live life to the fullest.