Tag: Astronomical

Free Download Inca Cosmovision: The Astronomical Legacy of an Andean Empire by Steven Gullberg , Milton Rojas Gamarra
English | PDF EPUB (True) | 2024 | 196 Pages | ISBN : 3031675797 | 116.1 MB
The Inkas (Quechua spelling) worshipped the Sun, and their emperor was thought to be the son of the Sun. They conquered most of the Andes and their former empire is replete with examples of their astronomy. They used solar positions on the horizon for calendrical purposes and managed their crops and religious festivals in this manner. Many examples remain of their intentional light and shadow effects that demonstrate their sophisticated understanding of the Sun’s movement and of solar horizon events.

Free Download Alessandro Piccolomini’s Early Astronomical Works: I. An Exploration of Their Cultural Significance: With Editions and Translations of De la Sfera del Mondo and De le Stelle Fisse by Kristen Lippincott
English | PDF EPUB (True) | 2024 | 297 Pages | ISBN : 3031567854 | 35.5 MB
This book presents the first interdisciplinary study of Alessandro Piccolomini’s two early astronomical works – De la Sfera del Mondo and De le Stelle Fisse. First published in Venice in 1540, the two treatises are amongst the earliest scientific texts written in the vernacular (Italian) and were specifically composed to make astronomical principles and practices available to a lay reader.

Free Download Small Astronomical Observatories: Amateur and Professional Designs and Constructions by Patrick Moore
English | PDF(True) | 1996 | 229 Pages | ISBN : 3540199136 | 24.3 MB
In Small Astronomical Observatories, Patrick Moore has collected descriptions of amateur and small professional observatories currently in use in Europe and America, showing how many astronomers have built their own observatory, often with effective and sometimes extraordinary improvisations to reduce the cost. There is a photograph of each, along with details of its construction and a foreword written by Patrick Moore. In addition to providing a fascinating study for its own sake, Small Astronomical Observatories offers a unique fund of ideas and practical details for anyone who wants to build an amateur or small professional observatory.

Free Download Milankovitch and Climate: Understanding the Response to Astronomical Forcing by A. Berger, J. Imbrie, J. Hays, G. Kukla, B. Saltzman
English | PDF | 1984 | 377 Pages | ISBN : 9027717788 | 28.7 MB
In recent years there have been many attempts to use simple energy balance models to simulate the climatic changes that occurred during the Pleistocene by altering the earth’s energy budget through sma 11 orb ita 1 element changes. Attempts with mean annual models which resolved latitudinal variation in tem- perature failed to produce large ice sheets when the obliquity was changed a few degrees (1,2) although these early models were generally more sensitive than today’s parameterizations would suggest. Attention then turned to seasona 1 energy balance models, since the primary insolation anomaly is seasonal. Sel- lers (3), Thompson and Schneider (4) and North and Coakley (5) developed simple models which were either effectively zonally averaged or included a separate land and ocean surface tempera- ture at each latitude. Suarez and Held (6) added some vertical resolution in their model. All included the ice-albedo feedback mechanism and horizontal transport which was essentially diffu- sive. The models shared one interesting property : they remai- ned rather insensitive to the sizes of orbital changes which were thought to have occurred in the Pleistocene. There were minor differences in the results and some pointed toward possi- ble ways out of the puzzle but curiously the mechanisms of ice- -albedo feedback in the insolation and water vapor feedback in the infrared terms ·seemed too weak to account for the ice ages (for a review of these models see (7) and more recently (8)).

Free Download Milankovitch and Climate: Understanding the Response to Astronomical Forcing by A. Berger, J. Imbrie, J. Hays, G. Kukla, B. Saltzman
English | PDF | 1984 | 377 Pages | ISBN : 9027717788 | 28.7 MB
In recent years there have been many attempts to use simple energy balance models to simulate the climatic changes that occurred during the Pleistocene by altering the earth’s energy budget through sma 11 orb ita 1 element changes. Attempts with mean annual models which resolved latitudinal variation in tem- perature failed to produce large ice sheets when the obliquity was changed a few degrees (1,2) although these early models were generally more sensitive than today’s parameterizations would suggest. Attention then turned to seasona 1 energy balance models, since the primary insolation anomaly is seasonal. Sel- lers (3), Thompson and Schneider (4) and North and Coakley (5) developed simple models which were either effectively zonally averaged or included a separate land and ocean surface tempera- ture at each latitude. Suarez and Held (6) added some vertical resolution in their model. All included the ice-albedo feedback mechanism and horizontal transport which was essentially diffu- sive. The models shared one interesting property : they remai- ned rather insensitive to the sizes of orbital changes which were thought to have occurred in the Pleistocene. There were minor differences in the results and some pointed toward possi- ble ways out of the puzzle but curiously the mechanisms of ice- -albedo feedback in the insolation and water vapor feedback in the infrared terms ·seemed too weak to account for the ice ages (for a review of these models see (7) and more recently (8)).

Free Download Astronomical Masers by Moshe Elitzur
English | PDF | 1992 | 363 Pages | ISBN : 0792312163 | 41 MB
One of the most spectacular discoveries of molecular astronomy has been the detection of maser emission. The same radiation that is generated in the laboratory only with elaborate, special equipment occurs naturally in interstellar space. This intense radiation probes the smallest structures that can be studied with radio telescopes. By a fortunate coincidence maser radiation is generated in both star forming regions and the envelopes of late-type stars. The early and late stages in the life of a star are considered to be the most interesting phases of stellar evolution. Maser emission has also been detected in external galaxies.

Free Download Astronomical Masers by Moshe Elitzur
English | PDF | 1992 | 363 Pages | ISBN : 0792312163 | 41 MB
One of the most spectacular discoveries of molecular astronomy has been the detection of maser emission. The same radiation that is generated in the laboratory only with elaborate, special equipment occurs naturally in interstellar space. This intense radiation probes the smallest structures that can be studied with radio telescopes. By a fortunate coincidence maser radiation is generated in both star forming regions and the envelopes of late-type stars. The early and late stages in the life of a star are considered to be the most interesting phases of stellar evolution. Maser emission has also been detected in external galaxies.

Free Download Astronomical Cuneiform Texts Babylonian Ephemerides of the Seleucid Period for the Motion of the Sun, the Moon, and the Planets by O. Neugebauer
English | PDF | 1955 | 829 Pages | ISBN : 1461255090 | 94 MB
THE MOON IX PREFACE TO THE SPRINGER EDITION When this collection of Babylonian astronomical purpose of column of the lunar ephemerides (by texts was published in 1955 (a date omitted by Aaboe) and the explanation of the method of computing the eclipse text ACT No. 6o (by Hamilton mistake from the title page), it contained all texts of this type that I could lay my hands on. As was to be and Aaboe). Some of these advances I have tried to incorporate into my History of Ancient Mathematical expected, the past 25 years provided more fragments, identified by A. Sachs and A. Aaboe in the British Astronomy (1975), which should be used as a guide to Museum and listed below. Also, some new joins the more recent literature. could be made and some errors of mine corrected. My sincerest thanks go to Springer-Verlag for Nevertheless, I think one still can consider the making this work again available to students of material of 1955 to be representative of what has been ancient astronomy. The Institute for Advanced preserved of the mathematical astronomy of the Study, which together with Brown University has Seleucid period. supported my work for more than four decades, has In the meantime, far more progress has been made graciously given its permission for this reprint. in our understanding of Babylonian astronomy, mainly by the publications of Aaboe, Hamilton, Maeyama, Sachs, van der Waerden, and others. As an Princeton 0.

Free Download Astronomical Python
by Imad Pasha
English | 2024 | ISBN: 0750351454 | 333 pages | True PDF EPUB | 80.04 MB

Free Download Understanding the Heavens: Thirty Centuries of Astronomical Ideas from Ancient Thinking to Modern Cosmology by Jean-Claude Pecker
English | PDF (True) | 2001 | 606 Pages | ISBN : 3540631984 | 51.9 MB
Astronomy is the oldest and most fundamental of the natural sciences. From the early beginnings of civilization astronomers have attempted to explain not only what the Universe is and how it works, but also how it started, how it evolved to the present day, and how it will develop in the future. The author, a well-known astronomer himself, describes the evolution of astronomical ideas, briefly discussing most of the instrumental developments. Using numerous figures to elucidate the mechanisms involved, the book starts with the astronomical ideas of the Egyptian and Mesopotamian philosophers, moves on to the Greek period, and then to the golden age of astronomy, i.e. to Copernicus, Galileo, Kepler, and Newton, and ends with modern theories of cosmology. Written with undergraduate students in mind, this book gives a fascinating survey of astronomical thinking.