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 of 2017 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.

From triangles, rotations and power laws, to cones, curves and the dreaded calculus, Alex takes you on a journey of mathematical discovery with his signature wit and limitless enthusiasm. He sifts through over 30,000 survey submissions to uncover the world’s favourite number, and meets a mathematician who looks for universes in his garage. He attends the World Mathematical Congress in India, and visits the engineer who designed the first roller-coaster loop. Get hooked on math as Alex delves deep into humankind’s turbulent relationship with numbers, and reveals how they have shaped the world we live in.

In four new novellas, Christina Henry returns to the world of Alice and Red Queen, where magic runs as freely as secrets and blood. Lovely Creature In the New City lives a girl with a secret: Elizabeth can do magic. But someone knows her secret--someone who has a secret of his own. That secret is a butterfly that lives in a jar, a butterfly that was supposed to be gone forever, a butterfly that used to be called the Jabberwock... Girl in Amber Alice and Hatcher are just looking for a place to rest. Alice has been dreaming of a cottage by a lake and a field of wildflowers, but while walking blind in a snowstorm she stumbles into a house that only seems empty and abandoned... When I First Came to Town Hatcher wasn't always Hatcher. Once, he was a boy called Nicholas, and Nicholas fancied himself the best fighter in the Old City. No matter who fought him he always won. Then his boss tells him he's going to battle the fearsome Grinder, a man who never leaves his opponents alive... The Mercy Seat There is a place hidden in the mountains, where all the people hate and fear magic and Magicians. It is the Village of the Pure, and though Alice and Hatcher would do anything to avoid it, it lies directly in their path...

The Myth: Alice was an ordinary girl who stepped through the looking glass and entered a fairy-tale world invented by Lewis Carroll in his famous storybook. The Truth: Wonderland is real. Alyss Heart is the heir to the throne, until her murderous aunt Redd steals the crown and kills Alyss? parents. To escape Redd, Alyss and her bodyguard, Hatter Madigan, must flee to our world through the Pool of Tears. But in the pool Alyss and Hatter are separated. Lost and alone in Victorian London, Alyss is befriended by an aspiring author to whom she tells the violent, heartbreaking story of her young life. Yet he gets the story all wrong. Hatter Madigan knows the truth only too well, and he is searching every corner of our world to find the lost princess and return her to Wonderland so she may battle Redd for her rightful place as the Queen of Hearts.

When a 60-kiloton explosion destroyed the University of Central Florida, and much of the surrounding countryside, the authorities first thought that terrorists had somehow obtained a nuclear weapon.

R. Shankar has introduced major additions and updated key presentations in this second edition of Principles of Quantum Mechanics. New features of this innovative text include an entirely rewritten mathematical introduction, a discussion of Time-reversal invariance, and extensive coverage of a variety of path integrals and their applications. Additional highlights include: - Clear, accessible treatment of underlying mathematics - A review of Newtonian, Lagrangian, and Hamiltonian mechanics - Student understanding of quantum theory is enhanced by separate treatment of mathematical theorems and physical postulates - Unsurpassed coverage of path integrals and their relevance in contemporary physics The requisite text for advanced undergraduate- and graduate-level students, Principles of Quantum Mechanics, Second Edition is fully referenced and is supported by many exercises and solutions. The book’s self-contained chapters also make it suitable for independent study as well as for courses in applied disciplines.