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Books > Science & Mathematics > Astronomy, space & time

Basic Physics of Nanoscience - Traditional Approaches and New Aspects at the Ultimate Level (Paperback): Wolfram Schommers Basic Physics of Nanoscience - Traditional Approaches and New Aspects at the Ultimate Level (Paperback)
Wolfram Schommers
R4,015 R3,634 Discovery Miles 36 340 Save R381 (9%) Ships in 12 - 17 working days

Basic Physics of Nanoscience: Traditional Approaches and New Aspects at the Ultimate Level deals with the description of properties at the Nano level and self-organizing quantum processes of Nano systems. The book presents the state of the art as well as theoretical discussions of future developments, beginning with simple Nano systems' sensitivity to small variations in interaction potential compared to bulk cases, and continuing with a discussion of the structure and dynamics of Nano systems as a function of temperature. Additionally, the book analyzes self-organizing quantum processes-which are essential in the design of new Nano systems-in detail, and explores new aspects related to the quantum theoretical nature of time, leading to an expansion of the basic laws through nanotechnology. Finally, the book explores the effect of nanotechnological manipulations of brain functions and the need for the development of reliable models for the matter-mind complex. This innovative approach to understanding Nano systems makes Basic Physics of Nanoscience a vital resource for advanced students and researchers of physics, materials science, and neuroscience.

An Introduction to Stellar Astrophysics (Paperback): F. Leblanc An Introduction to Stellar Astrophysics (Paperback)
F. Leblanc
R1,414 Discovery Miles 14 140 Ships in 12 - 17 working days

"An Introduction to Stellar Astrophysics" aspires to provide the reader with an intermediate knowledge on stars whilst focusing mostly on the explanation of the functioning of stars by using basic physical concepts and observational results.

The book is divided into seven chapters, featuring both core and optional content: Basic conceptsStellar FormationRadiative Transfer in StarsStellar AtmospheresStellar InteriorsNucleosynthesis and Stellar Evolution andChemically Peculiar Stars and Diffusion.

Student-friendly features include: Detailed examples to help the reader better grasp the most important conceptsA list of exercises is given at the end of each chapter and answers to a selection of these are presented.Brief recalls of the most important physical concepts needed to properly understand stars.A summary for each chapterOptional and advanced sections are included which may be skipped without interfering with the flow of the core content.

This book is designed to cover the most important aspects of stellar astrophysics inside a one semester (or half-year) course and as such is relevant for advanced undergraduate students following a first course on stellar astrophysics, in physics or astronomy programs. It will also serve as a basic reference for a full-year course as well as for researchers working in related fields.

Selections from Kepler's Astronomia Nova (Paperback): Johannes Kepler Selections from Kepler's Astronomia Nova (Paperback)
Johannes Kepler; Translated by William H Donahue
R278 R235 Discovery Miles 2 350 Save R43 (15%) Ships in 10 - 15 working days

Johannes Kepler wrote Astronomia Nova (1609) in a singleminded drive to sweep away the ancient and medieval clutter of spheres and orbs and to establish a new truth in astronomy, based on physical causality. Thus a good part of the book is given over to a nontechnical discussion of how planets can be made to move through space by physical forces. This is the theme of the readings in the present module. The selection includes Kepler's Introduction as well as a selection of chapters that develop the physics of planetary motion. In these ground-breaking chapters, the true Kepler emerges, not as a speculative mystic or a number-crunching drudge, but as a first-rate scientific thinker with a wonderfully engaging narrative style.

Raphael's Astronomical Ephemeris of the Planets' Places, 1995 (Paperback): Foulsham Books Raphael's Astronomical Ephemeris of the Planets' Places, 1995 (Paperback)
Foulsham Books; Edited by W Foulsham & Co
R143 Discovery Miles 1 430 Ships in 12 - 17 working days

This annual publication gives the longitudes of all the planets for each day and their latitudes and declinations for every other day and includes tables of houses for London, Liverpool and New York. It contains lunar and planetary aspectarians and all the necessary data for casting horoscopes. Each individual year of Raphael's Ephemeris from 1832 is also available.

Primitive Meteorites and Asteroids - Physical, Chemical, and Spectroscopic Observations Paving the Way to Exploration... Primitive Meteorites and Asteroids - Physical, Chemical, and Spectroscopic Observations Paving the Way to Exploration (Paperback)
Neyda M. Abreu
R3,624 R3,342 Discovery Miles 33 420 Save R282 (8%) Ships in 12 - 17 working days

Primitive Meteorites and Asteroids: Physical, Chemical, and Spectroscopic Observations Paving the Way to Exploration covers the physical, chemical and spectroscopic aspects of asteroids, providing important data and research on carbonaceous chondrites and primitive meteorites. This information is crucial to the success of missions to parent bodies, thus contributing to an understanding of the early solar system. The book offers an interdisciplinary perspective relevant to many fields of planetary science, as well as cosmochemistry, planetary astronomy, astrobiology, geology and space engineering. Including contributions from planetary and missions scientists worldwide, the book collects the fundamental knowledge and cutting-edge research on carbonaceous chondrites and their parent bodies into one accessible resource, thus contributing to the future of space exploration.

How the World Works: Astronomy - From plotting the stars to pulsars and black holes (Paperback): Anne Rooney How the World Works: Astronomy - From plotting the stars to pulsars and black holes (Paperback)
Anne Rooney
R330 R263 Discovery Miles 2 630 Save R67 (20%) Ships in 12 - 17 working days
Losing the Nobel Prize - A Story of Cosmology, Ambition, and the Perils of Science's Highest Honor (Paperback): Brian... Losing the Nobel Prize - A Story of Cosmology, Ambition, and the Perils of Science's Highest Honor (Paperback)
Brian Keating
R445 Discovery Miles 4 450 Ships in 12 - 17 working days

In Losing the Nobel Prize, cosmologist and inventor of the BICEP (Background Imaging of Cosmic Extragalactic Polarization) experiment Brian Keating tells the inside story of BICEP2's mesmerising discovery and the scientific drama that ensued. In an adventure story that spans the globe, Keating takes us on a personal journey of revelation and discovery, bringing to vivid life the highly competitive, take-no-prisoners, publish-or-perish world of modern science. Along the way, he provocatively argues that the Nobel Prize, instead of advancing scientific progress, may actually hamper it, encouraging speed and greed while punishing collaboration and bold innovation.

Raphael's Astronomical Ephemeris of the Planets' Places 1994 (Paperback): Foulsham Books Raphael's Astronomical Ephemeris of the Planets' Places 1994 (Paperback)
Foulsham Books
R144 Discovery Miles 1 440 Ships in 12 - 17 working days

This is a reference source for professional and student astrologers alike. The book has been published annually since 1821. It gives the longitudes of all the planets for each day and their latitudes and declinations for every other day, and includes tables of houses for London, Liverpool and New York. The book also contains complete lunar and planetary aspectarians together with all the neccessary data for casting horoscopes for all places in the world, both north and south of the Equator.

Cosmic Origins - Science's Long Quest to Understand How Our Universe Began (Hardcover, 1st ed. 2022): M. Mitchell Waldrop Cosmic Origins - Science's Long Quest to Understand How Our Universe Began (Hardcover, 1st ed. 2022)
M. Mitchell Waldrop
R853 Discovery Miles 8 530 Ships in 12 - 17 working days

Cosmic Origins tells the story of how physicists and astronomers have struggled for more than a century to understand the beginnings of our universe, from its origins in the Big Bang to the modern day. The book will introduce the science as a narrative, by telling the story of the scientists who made each major discovery. It will also address and explain aspects of our theories that some cosmologists are still hesitant to accept, as well as gaps in our knowledge and even apparent inconsistencies in our measurements. Clearly written by a master of scientific exposition, this book will fascinate the curious general reader as well as providing essential background reading for college-level courses on physics and astronomy.

Picturing Apollo 11 - Rare Views and Undiscovered Moments (Hardcover): J. L. Pickering, John Bisney Picturing Apollo 11 - Rare Views and Undiscovered Moments (Hardcover)
J. L. Pickering, John Bisney
R1,283 R1,053 Discovery Miles 10 530 Save R230 (18%) Ships in 10 - 15 working days

Picturing Apollo 11 is an unprecedented photographic history of the space mission that defined an era. Through a wealth of unpublicized and recently discovered images, this book presents new and rarely-seen views of the people, places, and events involved in the pioneering first moon landing of July 20, 1969. No other book has showcased as many never-before-seen photos connected with Apollo 11, or as many photos covering the activities from months before to years after the mission. Starting with the extensive preparations, these photographs show astronauts Neil Armstrong, Michael Collins, and Buzz Aldrin training for the flight, as well as the stages of the massive Saturn V rocket arriving at the Kennedy Space Center for assembly. They capture the media frenzy over the unfolding story and the "moon fever" that gripped the nation. Also featured here are shots of incredible moments from the mission. In these images, spectators flock to Cape Canaveral. The rocket launches in a cloud of fire and thunder. Armstrong and Aldrin step out of the lunar module Eagle onto the surface of the moon. The command module Columbia splashes down in the Pacific Ocean, and the extraordinary voyage is celebrated around the world and in the following decades. Most of the photographs were selected from NASA archives and the collection of J. L. Pickering, the world's largest private collection of U.S. human space flight images. The accompanying text details the scenes, revealing the astonishing scale and scope of activities that went into planning and executing the first moon landing. This book commemorates the historic mission and evokes the electric atmosphere of the time.

Welcome to the Universe - An Astrophysical Tour (Hardcover): Neil De Grasse Tyson, Michaela Strauss, J. Richard Gott Welcome to the Universe - An Astrophysical Tour (Hardcover)
Neil De Grasse Tyson, Michaela Strauss, J. Richard Gott 1
R1,101 R944 Discovery Miles 9 440 Save R157 (14%) Ships in 12 - 17 working days

A NEW YORK TIMES BESTSELLER Welcome to the Universe is a personal guided tour of the cosmos by three of today's leading astrophysicists. Inspired by the enormously popular introductory astronomy course that Neil deGrasse Tyson, Michael A. Strauss, and J. Richard Gott taught together at Princeton, this book covers it all--from planets, stars, and galaxies to black holes, wormholes, and time travel. Describing the latest discoveries in astrophysics, the informative and entertaining narrative propels you from our home solar system to the outermost frontiers of space. How do stars live and die? Why did Pluto lose its planetary status? What are the prospects of intelligent life elsewhere in the universe? How did the universe begin? Why is it expanding and why is its expansion accelerating? Is our universe alone or part of an infinite multiverse? Answering these and many other questions, the authors open your eyes to the wonders of the cosmos, sharing their knowledge of how the universe works. Breathtaking in scope and stunningly illustrated throughout, Welcome to the Universe is for those who hunger for insights into our evolving universe that only world-class astrophysicists can provide.

Cosmonaut - A Cultural History (Hardcover): Cathleen S. Lewis Cosmonaut - A Cultural History (Hardcover)
Cathleen S. Lewis
R1,205 Discovery Miles 12 050 Ships in 10 - 15 working days

How the public image of the Soviet cosmonaut was designed and reimagined over timeIn this book, Cathleen Lewis discusses how the public image of the Soviet cosmonaut developed beginning in the 1950s and the ways this icon has been reinterpreted throughout the years and in contemporary Russia. Compiling material and cultural representations of the cosmonaut program, Lewis provides a new perspective on the story of Soviet spaceflight, highlighting how the government has celebrated figures such as Yuri Gagarin and Valentina Tereshkova through newspapers, radio, parades, monuments, museums, films, and even postage stamps and lapel pins. Lewis's analysis shows that during the Space Race, Nikita Khrushchev mobilized cosmonaut stories and images to symbolize the forward-looking Soviet state and distract from the costs of the Cold War. Public perceptions shifted after the first Soviet spaceflight fatality and failure to reach the Moon, yet cosmonaut imagery was still effective propaganda, evolving through the USSR's collapse in 1991 and seen today in Vladimir Putin's government cooperation for a film on the 1985 rescue of the Salyut 7 space station. Looking closely at the process through which Russians continue to reexamine their past, Lewis argues that the cultural memory of spaceflight remains especially potent among other collective Soviet memories.

An Introduction to Astronomy and Astrophysics (Hardcover): Pankaj Jain An Introduction to Astronomy and Astrophysics (Hardcover)
Pankaj Jain
R2,383 Discovery Miles 23 830 Ships in 12 - 17 working days

Astronomy is the field of science devoted to the study of astronomical objects, such as stars, galaxies, and nebulae. Astronomers have gathered a wealth of knowledge about the universe through hundreds of years of painstaking observations. These observations are interpreted by the use of physical and chemical laws familiar to mankind. These interpretations supply information about the nature of these astronomical objects, allowing for the deduction of their surface and interior conditions. The science associated with these interpretations is called astrophysics. An Introduction to Astronomy and Astrophysics offers a comprehensive introduction to astronomy and astrophysics, complete with illustrative examples and illuminating homework problems. Requiring a familiarity with basic physics and mathematics, this undergraduate-level textbook: Addresses key physics concepts relevant to stellar observations, including radiation, electromagnetic spectrum, photometry, continuous and discrete spectrum, and spectral lines Describes instruments used for astronomical observations as well as how the radiation received is characterized and interpreted to determine the properties of stars Examines the structure of stars, the basic equations which explain stars in equilibrium, and the fusion reactions occurring in stellar cores Discusses the evolution of stars, the solar system, the dynamics of galaxies, and the fundamentals of modern cosmology Explores the universe at high redshifts, where it is dominated by objects such as active galaxies Solutions manual and figure slides available with qualifying course adoption An Introduction to Astronomy and Astrophysics teaches students how to interpret the night sky, providing them with a critical understanding of the stars and other heavenly bodies.

Sky and Earth - Travelling with Dante Alighieri and Marco Polo (Paperback, 1st ed. 2023): Giuseppe Mussardo, Gaspare Polizzi Sky and Earth - Travelling with Dante Alighieri and Marco Polo (Paperback, 1st ed. 2023)
Giuseppe Mussardo, Gaspare Polizzi
R944 R759 Discovery Miles 7 590 Save R185 (20%) Ships in 10 - 15 working days

700 years after Dante Alighieri's death, this book intertwines the voice of the great poet with that of an exceptional contemporary, Marco Polo, who was equally curious about the geography of both earthly and celestial worlds. If Polo was the “ordinary genius” of the XIII century, the designation of “sorcerer genius” must go to Alighieri, the man with encyclopedic wisdom, at ease with his era’s philosophy, theology, and science. The sorcerer genius—well versed in this world—must create their own, which he did with The Divine Comedy. On the other hand, The Travels of Marco Polo, the greatest classic in travel literature, offers wonder and provides delight. This book combines the unforgettable characters of both books, the darkness of the infernal landscapes with the immensity of the Asian deserts, the richness of the Mongol empire with the glamor of medieval philosophy, the aspirations and dreams of two great explorers with knowledge of the science of their time, as well as the ever-eternal cosmology. This is an accessible and entertaining book for high school students, scholars of scientific history and the history of ideas, and curious readers who want to know more about Dante and Marco Polo and their unquenchable thirst for knowledge. This book is a translation of an original German edition. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation.

The Solar System 1 - Telluric and Giant Planets (Hardcover): T. Encrenaz The Solar System 1 - Telluric and Giant Planets (Hardcover)
T. Encrenaz
R3,865 Discovery Miles 38 650 Ships in 12 - 17 working days

This book presents a global and synthetic vision of planetology - the study of objects in the Solar System. In the past several decades, planetology has undergone a real revolution, marked in particular by the discovery of the Kuiper belt beyond Neptune, the discovery of extrasolar planets, and also by the space exploration of ever more distant objects. Today, it is at the crossroads of many disciplines: astronomy, geophysics, geochemistry and biology. The Solar System 1 deals with the Solar System as a whole, offering a general presentation of the objects that compose it and its place in the galaxy. It also deals with planetary systems, exoplanets and the interaction of Solar System objects with interplanetary medium. Finally, it analyzes the telluric and giant planets.

The Solar System 2 - External Satellites, Small Bodies, Cosmochemistry, Dynamics, Exobiology (Hardcover): T. Encrenaz The Solar System 2 - External Satellites, Small Bodies, Cosmochemistry, Dynamics, Exobiology (Hardcover)
T. Encrenaz
R3,872 Discovery Miles 38 720 Ships in 12 - 17 working days

This book presents a global and synthetic vision of planetology - the study of objects in the Solar System. In the past several decades, planetology has undergone a real revolution, marked in particular by the discovery of the Kuiper belt beyond Neptune, the discovery of extrasolar planets, and also by the space exploration of ever more distant objects. Today, it is at the crossroads of many disciplines: astronomy, geophysics, geochemistry and biology. The Solar System 2 studies the outer Solar System: satellites and rings of giant planets, small bodies and dwarf planets. It also deals with meteorites and cosmochemistry, as well as the formation and dynamics of the Solar System. It addresses the question of the origin of life and extraterrestrial life, and presents all of the methods in the study of planetology.

Fear of a Black Universe - An Outsider's Guide to the Future of Physics (Hardcover): Stephon Alexander Fear of a Black Universe - An Outsider's Guide to the Future of Physics (Hardcover)
Stephon Alexander
R734 R609 Discovery Miles 6 090 Save R125 (17%) Ships in 10 - 15 working days
The Edge of Physics - Dispatches from the Frontiers of Cosmology (Paperback): Anil Ananthaswamy The Edge of Physics - Dispatches from the Frontiers of Cosmology (Paperback)
Anil Ananthaswamy 1
R248 Discovery Miles 2 480 Ships in 12 - 17 working days

A scientific and globetrotting exploration of the physics experiments changing the ways we understand our universe. Why is the universe expanding? What is the nature of dark matter? Do other universes exist? In this timely and original book, science writer Anil Ananthaswamy embarks on a global journey to some of the world's most inhospitable and dramatic research sites to witness first-hand the audacious physics experiments conducted to answer profound questions about the nature of the universe. From the Atacama Desert in the Chilean Andes to the European Southern Observatory's Very Large Telescope on Mount Paranal to deep inside an abandoned iron mine in Minnesota and to the East Antarctic Ice Sheet, Ananthaswamy weaves together stories about the people and places at the heart of this cosmological research. While explaining the immense questions that scientists are trying to answer, Ananthaswamy provides an accessible and unique portrait of the universe and our quest to understand it. An atmospheric, engaging and illuminating read, The Edge of Physics depicts science as a human process and brings cosmology with all its rarefied concepts down to earth. ***PRAISE FOR THE EDGE OF PHYSICS*** 'A travelogue that celebrates the blood, sweat and tears that drive our understanding of the universe.' Guardian 'An excellent book. The author has a great knack of making difficult subjects comprehensible. I thoroughly enjoyed it.' Sir Patrick Moore 'A remarkable narrative that combines fundamental physics with high adventure.' New Scientist 'The ultimate physics-adventure travelogue... brilliant.' Physics World 'A grand tour of modern day cosmology's sacred places... evocative... engaging... refreshing... a taste of science in the heroic mode.' BBC Sky at Night 'Clean, elegant prose, humming with interest.' Robert MacFarlene 'An accomplished and timely overview of modern cosmology and particle astrophysics.' Nature

Black Hole Survival Guide (Paperback): Janna Levin Black Hole Survival Guide (Paperback)
Janna Levin
R240 R192 Discovery Miles 1 920 Save R48 (20%) Ships in 5 - 10 working days

What would happen if you fell into a Black Hole? Black holes are found throughout the universe. They can be microscopic. They can be billions of times larger than our Sun. They are dark on the outside but not on the inside. Anything that enters them can never escape, and yet they contain nothing at all. In Black Hole Survival Guide physicist and novelist Janna Levin takes you on a journey into a black hole, explaining what would happen to you and why. In the process you'll come to see how their mysteries contain answers to some of the most profound questions ever asked about the nature of our universe. 'Astrophysics at its sexiest...hugely enjoyable' Sunday Times

Just Six Numbers (Paperback): Martin Rees Just Six Numbers (Paperback)
Martin Rees
R304 R247 Discovery Miles 2 470 Save R57 (19%) Ships in 9 - 15 working days

Astronomer Royal Martin Rees shows how the behaviour and origins of the universe can be explained by just six numbers. How did a single genesis event create billions of galaxies, black holes, stars and planets? How did atoms assemble - here on Earth, and perhaps on other worlds - into living beings intricate enough to ponder their origins? This book describes the recent avalanche of discoveries about the universe's fundamental laws, and the deep connections that exist between stars and atoms - the cosmos and the microscopic world. Just six numbers, imprinted in the big bang, determine the essence of our world, and this book devotes one chapter to explaining each.

Carrying the Fire - An Astronaut's Journeys (Paperback): Michael Collins Carrying the Fire - An Astronaut's Journeys (Paperback)
Michael Collins 1
R368 Discovery Miles 3 680 Ships in 12 - 17 working days

In July 1969, Neil Armstrong, Buzz Aldrin and Michael Collins piloted the Apollo 11 spacecraft to the moon.

Fifty years later, it is still one of the greatest achievements in human history.

In this remarkable memoir, a defining classic, Michael Collins conveys, in a very personal way, the drama, beauty, and humour of that adventure. He also traces his development from his first flight experiences in the air force, through his days as a test pilot, to his involvement in Project Gemini and his first spaceflight on Gemini 10. He presents an evocative picture of the famous Apollo 11 spacewalk, detailing the joys of flight and a new perspective on time, light, and movement from someone who has seen the fragile Earth from the other side of the moon.

Celebrating the 50th anniversary of the moon-landing, Carrying the Fire by Michael Collins is the utterly absorbing and truly compelling classic account of what it was like to be a member of the Apollo 11 mission to the moon.

Our Cosmic Habitat - New Edition (Paperback, New): Martin Rees Our Cosmic Habitat - New Edition (Paperback, New)
Martin Rees; Preface by Martin Rees
R475 R386 Discovery Miles 3 860 Save R89 (19%) Ships in 12 - 17 working days

Our universe seems strangely "biophilic," or hospitable to life. Is this happenstance, providence, or coincidence? According to cosmologist Martin Rees, the answer depends on the answer to another question, the one posed by Einstein's famous remark: "What interests me most is whether God could have made the world differently." This highly engaging book explores the fascinating consequences of the answer being "yes." Rees explores the notion that our universe is just a part of a vast "multiverse," or ensemble of universes, in which most of the other universes are lifeless. What we call the laws of nature would then be no more than local bylaws, imposed in the aftermath of our own Big Bang. In this scenario, our cosmic habitat would be a special, possibly unique universe where the prevailing laws of physics allowed life to emerge. Rees begins by exploring the nature of our solar system and examining a range of related issues such as whether our universe is or isn't infinite. He asks, for example: How likely is life? How credible is the Big Bang theory? Rees then peers into the long-range cosmic future before tracing the causal chain backward to the beginning. He concludes by trying to untangle the paradoxical notion that our entire universe, stretching 10 billion light-years in all directions, emerged from an infinitesimal speck. As Rees argues, we may already have intimations of other universes. But the fate of the multiverse concept depends on the still-unknown bedrock nature of space and time on scales a trillion trillion times smaller than atoms, in the realm governed by the quantum physics of gravity. Expanding our comprehension of the cosmos, Our Cosmic Habitat will be read and enjoyed by all those--scientists and nonscientists alike--who are as fascinated by the universe we inhabit as is the author himself.

Interpreting the Eclipses (Paperback): Robert Carl Jansky Interpreting the Eclipses (Paperback)
Robert Carl Jansky
R455 R373 Discovery Miles 3 730 Save R82 (18%) Ships in 10 - 15 working days

Long out of print and hard to find, this is the most celebrated book on eclipses of the last seventy years. In this book, learn the unique astronomical factors that create eclipses and why some eclipses are total while others are not. Learn how the Chaldeans discovered the Saros cycle in the sixth century BC, which is still in use today. Learn how the Greeks discovered the Metonic cycle. Find out how the Saros cycle is used in forecasting the effects of eclipses. Jansky gives the astrological key for all 19 of the Saros series. The author uses his understanding of eclipse mechanics in analysis. He uses the twelve houses of the chart, planets conjunct and opposed, the Saros series, fixed stars conjunct the eclipse as well as stars rising or setting on the horizon (ascendant/descendant), the planetary ruler, and the path of the Moon's shadow (the umbra) as it races across the earth during the eclipse itself. Jansky's interpretation of eclipses is rooted in Transactional Analysis (what I do to you becomes what you do to me, etc.), which, astrologically, is the study of polarities, which is what lunar and solar eclipses literally represent, and how these polarities, expressed as opposing signs and houses, can be resolved in terms of human relationships. Jansky delves into the astrological duration of an eclipse, prenatal eclipses, eclipses in rectification and eclipses and health. For case studies he tells of an eclipse-driven corporate crisis at his employer and how it impacted him, his fellow employees, and the management. In the data section, solar eclipses for the 20th century: Date, degree of the zodiac, total, partial or annular, and the Saros number. Also, longitudes of major fixed stars and general and medical bibliographies. A comprehensive book on eclipses. A must-have.

Infrared Spectroscopy of Triatomics for Space Observation (Hardcover): Pr Dahoo Infrared Spectroscopy of Triatomics for Space Observation (Hardcover)
Pr Dahoo
R3,886 Discovery Miles 38 860 Ships in 12 - 17 working days

This book is dedicated to the application of the different theoretical models described in Volume 1 to identify the near-, mid- and far-infrared spectra of linear and nonlinear triatomic molecules in gaseous phase or subjected to environmental constraints, useful for the study of environmental sciences, planetology and astrophysics. The Van Vleck contact transformation method, described in Volume 1, is applied in the calculation and analysis of IR transitions between vibration-rotation energy levels. The extended Lakhlifi-Dahoo substitution model is used in the framework of Liouville's formalism and the line profiles of triatomic molecules and their isotopologues subjected to environmental constraints are calculated by applying the cumulant expansion. The applications presented in this book show how interactions at the molecular level modify the infrared spectra of triatomics trapped in a nano-cage (substitution site of a rare gas matrix, clathrate, fullerene, zeolite) or adsorbed on a surface, and how these interactions may be used to identify the characteristics of the perturbing environment.

Gemini 12 - The NASA Mission Reports (Paperback): Robert Godwin Gemini 12 - The NASA Mission Reports (Paperback)
Robert Godwin
R560 R508 Discovery Miles 5 080 Save R52 (9%) Ships in 12 - 17 working days

NASA's ambitious but essential Gemini Program was culminated in November 1966 with the launch of Gemini 12 from Kennedy Space enter's Launch Complex 19. This tenth manned Gemini mission was the final opportunity to develop and practice many new techniques that were integral to the upcoming Apollo program. With the successful conclusion of the Gemini 12 mission, veteran astronaut Command Pilot James Lovell had set another new record with a total of 18 days in space, and Pilot Edwin (Buzz) Aldrin held the EVA duration record with an umbilical EVA at the Agena work station of 2 hours and 9 minutes. In all, three EVA (extra-vehicular activity) sessions were performed during the mission. Going into the Gemini 12 mission, many questions of EVA procedure were still unresolved. In the past, astronauts had expended too much energy simply staying in position. In an effort to better develop techniques and train astronauts, for the first time, underwater simulation was incorporated into EVA training. Using a submerged mock-up of the Gemini-Agena spacecraft, EVA training proceeded almost to the eve of launch.;Training in the neutral-buoyancy underwater simulation allowed the astronauts to practice the entire EVA procedure in a single session - just as they would be required to do in space. This was a major advance over simulated weightlessness in aircraft parabolic flights, which provided only 30 seconds of weightlessness at a stretch. Gemini 12 successfully executed a fuelless station-keeping exercise for 4 hours and 20 minutes with the use of a dacron tether between the Gemini and Agena vehicles. Once the tether had been pulled taut, the reaction control systems for both vehicles were turned off, and the slight difference in the Earth's gravitational effect on the two space vehicles was sufficient to keep the tether taut, so the two spacecraft remained at a constant separation, without the use of any reaction control fuel. Despite mission changes brought on by a radar lock-on failure and by a malfunction of the Agena Primary Propulsion System (PPS), the Gemini 12 mission was considered to be a major success, continuing the success story of the entire Gemini program.;Apollo could take man to the Moon only after Gemini had introduced him to the space environment and taught him how to perform there. CD included.

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