Molecular Symmetry and Spectroscopy deals with the use of group theory in quantum mechanics in relation to problems in molecular spectroscopy. It discusses the use of the molecular symmetry group, whose elements consist of permutations of identical nuclei with or without inversion. After reviewing the permutation groups, inversion operation, point groups, and representation of groups, the book describes the use of representations for labeling molecular energy. The text explains an approximate time independent Schrödinger equation for a molecule, as well as the effect of a nuclear permutation or the inversion of E* on such equation. The book also examines the expression for the complete molecular Hamiltonian and the several groups of operations commuting with the Hamiltonian. The energy levels of the Hamiltonian can then be symmetrically labeled by the investigator using the irreducible representations of these groups. The text explains the two techniques to change coordinates in a Schrödinger equation, namely, (1) by using a diatomic molecule in the rovibronic Schrödinger equation, and (2) by a rigid nonlinear polyatomic molecule. The book also explains that using true symmetry, basis symmetry, near symmetry, and near quantum numbers, the investigator can label molecular energy levels. The text can benefit students of molecular spectroscopy, academicians, and investigators of molecular chemistry or quantum mechanics.
In a world torn apart by endless warfare between the Soviet Union and the United Nations, humanity struggles to survive amidst the desolation of a nuclear wasteland. Philip K. Dick's captivating short story, Second Variety, delves deep into the consequences of war and the relentless pursuit of power. Originally published in 1953, this chilling science fiction masterpiece has inspired blockbuster films like Screamers and its sequel Screamers: The Hunting. From the author that brought you timeless cinematic classics such as Blade Runner, Total Recall, and Minority Report, comes an unforgettable adventure that will leave you questioning the boundaries of trust and the cost of destruction. As Russia pushes the United States to the brink, the UN devises a last-ditch effort to win the war-- an arsenal of deadly, self-replicating assassin machines known as "claws". Equipped with the ability to evolve and the sole objective to exterminate all living organisms, the claws are programmed to recognize and spare those who wear designated badges. But when the machines begin to uncover unexpected ways to outsmart their creators, the very existence of life on Earth is threatened. Second Variety presents a gripping and thought-provoking story that challenges the nature of humanity and the ramifications of technology gone awry. With unforgettable characters, nail-biting suspense, and an unsettling take on a dystopian future, this is one book you won't be able to put down.
Thirteen short stories by the legendary author of The Man in the High Castle and other science fiction classics. Philip K. Dick didn’t predict the future―he summoned the desperate bleakness of our present directly from his fevered paranoia. Dick didn’t predict the Internet or iPhones or email or 3D printers, but rather he so thoroughly understood human nature that he could already see, even at the advent of the transistor, the way technology would alienate us from each other and from ourselves. He could see us isolated and drifting in our own private realities even before we had plugged in our ear buds. He could see, even in the earliest days of space exploration, how much of our own existence remained unexplored, and how the great black spaces between people were growing even as our universe was shrinking. Philip K. Dick spent his first three years as a science fiction author writing shorter fiction, and in his lifetime he composed almost 150 short stories, many of which have gone on to be adapted into (slightly watered down) Hollywood blockbusters. Collected here are thirteen of his most Dickian tales, funhouse realities with trap doors and hidden compartments.
This is a collection of 26 short stories written by the writer behind movies like "Blade Runner" (1982), "Total Recall" (1990), "Screamers" (1995), "Minority Report" (2002), "Next" (2007) and "The Adjustment Bureau" (2011), just to mention a few. That means - High quality Sci-Fi from cover to cover in other words!
Tales from the Other Side contains 13 of Dick’s most dazzling and resonant stories. This collection draws from the writer’s earliest short stories 1952–1955, and features such fascinating works as The Crystal Crypt, Second Variety, The Variable Man, The Eyes Have It, Piper in the Woods, Mr. Spaceship and many others. Here, readers will find Dick’s initial explorations of the themes he so brilliantly brought to life in his later work.
Philip Keith's Fire Base Illingworth is an epic, never-before-told true story of a North Vietnamese Army attack and how the men of this nearly overrun Fire Base survived. In the early morning hours of April 1, 1970, more than four hundred North Vietnamese soldiers charged out into the open and tried to over-run FSB Illingworth. The battle went on, mostly in the dark, for hours. Exposed ammunition canisters were hit and blew up, causing a thunderous explosion inside the FSB that left dust so thick it jammed the hand-held weapons of the GIs. Much of the combat was hand-to-hand. In all, twenty-four Americans lost their lives and another fifty-four were wounded. Nearly one hundred enemy bodies were recovered. It was one of the most vicious small unit firefights in the history of U.S. forces in Vietnam. As in his acclaimed book Blackhorse Riders, a finalist for the prestigious Colby Award, Phil Keith uncovers a harrowing true story of bravery and sacrifice by the men who fought valiantly to hold FSB Illingworth—a tale never-before-told and one that will not be soon forgotten.
In the aftermath of a devastating nuclear war between the United Nations and the Soviet Union, sophisticated robots—nicknamed “claws”—are created to destroy what remains of human life. Left to their own devices, however, the claws develop robots of their own. II-V, the second variety, remains unknown to the few humans left on Earth. Or does it? Philip K. Dick was an American science-fiction novelist, short-story writer and essayist. His first short story, “Beyond Lies the Wub,” was published shortly after his high school graduation. Some of his most famous short stories were adapted for film, including “The Minority Report,” “Paycheck,” “Second Variety” (adapted into the film Screamers) and “We Can Remember It For You Wholesale” (adapted into the film Total Recall). HarperCollins brings great works of literature to life in digital format, upholding the highest standards in ebook production and celebrating reading in all its forms. Look for more titles in the HarperCollins short-stories collection to build your digital library.
The highly prolific and influential science fiction author Philip K. Dick published 44 novels and more than 120 brief works during his lifetime. This anthology presents his finest short stories and novellas that originally appeared in pulp magazines of the early 1950s. Contents include "The Variable Man," "Second Variety," "Beyond the Door," "The Defenders," and more.
Includes the stories that inspired the movies Total Recall, Screamers, Minority Report, Paycheck, and Next "More than anyone else in the field, Mr. Dick really puts you inside people's minds." --The Wall Street Journal The Philip K. Dick Reader Many thousands of readers consider Philip K. Dick the greatest science fiction mind on any planet. Since his untimely death in 1982, interest in Dick's works has continued to mount, and his reputation has been further enhanced by a growing body of critical attention. The Philip K. Dick Award is now given annually to a distinguished work of science fiction, and the Philip K. Dick Society is devoted to the study and promulgation of his works. Dick won the prestigious Hugo Award for the best novel of 1963 for The Man in the High Castle. In the last year of his life, the film Blade Runner was made from his novel Do Androids Dream of Electric Sheep? This collection includes some of Dick's earliest short and medium-length fiction, including We Can Remember It for You Wholesale (the story that inspired the motion picture Total Recall), Second Variety (which inspired the motion picture Screamers), Paycheck, The Minority Report, and twenty more.
The only thing that ever really frightened me during the war was the U-boat peril - Prime Minister Winston Churchill. Churchill, as a former First Lord of the Admiralty, was well versed in the importance of Britain protecting itself at sea. In the opening years of the Second World War, Germanys U-boat (submarine) fleet was tasked with attacking and destroying the supply ships that Britain depended upon for its survival.The U-boats were under the command of Grand Admiral Karl Doenitz who, for much of the war, effectively guided that strategy. There was a very real possibility that the British people would starve if the U-boats succeeded in their campaign. When France fell to the German forces in 1940, Hitlers Ubootwaffe gained a significant asset in five important ports along the Brittany coast - Brest, Lorient, St. Nazaire, La Palace and Bordeaux. The use of these ports put Germanys submarine force hundreds of miles closer to the action in the North Atlantic, the routes of the Allied supply convoys which were operating mainly between Halifax, Nova Scotia and various English port cities. This afforded the U-boats several more days at sea on their deadly patrols than was possible while they had been based in Germany and German-occupied Norway.In this new publication from Philip Kaplan, the massive bunkers or pens constructed in Brittany by the laborers of the German Organisation Todt are revisited. These giant structures, some of which sheltered more than a dozen submarines at a time, still exist because they were built with concrete ceilings more than three meters thick. With equally impressive supporting walls, they suffered relatively little damage in the wartime bombing raids of the Royal Air Force and the US Eighth Army Air Force. Illustrated with more than 150 rare and compelling photo images, this book is a richly rewarding journey back across time to some of the most intriguing and electrifying sites from the war years. The story of the pen shelters and their part in that war is both fascinating and enduring.
Philip K. Dick ponders the very nature of humanity in this anthology of five gripping short stories and novellas. Includes “The Defenders,” “Foster, You’re Dead,” “Piper in the Woods,” “Second Variety,” and “The Variable Man.”
A collection of poignant oral histories challenges the myths and prejudices surrounding the veterans of the Vietnam War, surveying the experiences of soldiers who in spite of traumatizing experiences returned home to pursue an understanding of what they endured and serve productive lives of public service.
The stories within SECOND VARIETY were written between 1952 and 1955, while America was in the grip of McCarthyism. The concerns of the time are reflected in stories such as Second Variety, which tells of an endless war fought by ever more cunning and sophisticated robots, or Imposter where a man accused of being an alien spy finds his whole identity called into question. Using his marvellously varied, quirky and idiosyncratic style, Dick speaks up for ordinary people against militarism, paranoia and xenophobia.
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