Heikki Oja – författare
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5 produkter
293 kr
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Vid reformationen slutade man fira helgonen, men namnen från den medeltida kyrkans helgonkalender lever kvar i almanackorna. Här presenteras, i datumordning, 800 helgon och dess legender. Bekanta namn som Birgitta och Henrik, men också bortglömda som Adelgunda och Quirinus.Professor Heikki Oja är docent i astronomi. Han var chef för Helsingfors universitets almanacksbyrå 1995–2013. Oja har gett ut fackböcker främst inom astronomi och verkat inom den astronomiska föreningen Ursa. I Finland har han premierats med Statens pris för informationsspridning 1979, 2000, 2014 och 2018.Översättning: Heikki Oja och Karl Johan Donner. Ges ut i samarbete med Svenska litteratursällskapet i Finland.
538 kr
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The main purpose of this book is to serve as a university textbook for a first course in astronomy. However, we believe that the audience will also include many serious ama teurs, who often find the popular texts too trivial. The lack of a good handbook for am ateurs has become a problem lately, as more and more people are buying personal com puters and need exact, but comprehensible, mathematical formalism for their programs. The reader of this book is assumed to have only a standard high-school knowledge of mathematics and physics (as they are taught in Finland); everything more advanced is usually derived step by step from simple basic principles. The mathematical background needed includes plane trigonometry, basic differential and integral calculus, and (only in the chapter dealing with celestial mechanics) some vector calculus. Some mathematical concepts the reader may not be familiar with are briefly explained in the appendices or can be understood by studying the numerous exercises and examples. However, most of the book can be read with very little knowledge of mathematics, and even if the reader skips the mathematically more involved sections, (s)he should get a good overview of the field of astronomy. This book has evolved in the course of many years and through the work of several authors and editors. The first version consisted of lecture notes by one of the editors (Oja).
698 kr
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Fundamental Astronomy is an exhaustive introduction to classical and modern astronomy. It covers both overarching concepts and underlying principles. It provides a sound basis for more profound studies in astronomy. This fifth edition is richly illustrated with more than 400 images.
857 kr
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Fundamental Astronomy is an exhaustive introduction to classical and modern astronomy. It covers both overarching concepts and underlying principles. It provides a sound basis for more profound studies in astronomy. This fifth edition is richly illustrated with more than 400 images.
910 kr
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Now in its sixth edition, this successful undergraduate textbook gives a well-balanced and comprehensive introduction to the topics of classical and modern astronomy. While emphasizing both the astronomical concepts and the underlying physical principles, the text provides a sound basis for more profound studies in the astronomical sciences. The chapters on galactic and extragalactic astronomy as well as cosmology were extensively modernized in the previous edition. In this new edition they have been further revised to include more recent results. The long chapter on the solar system has been split into two parts: the first one deals with the general properties, and the other one describes individual objects. A new chapter on exoplanets has been added to the end of the book next to the chapter on astrobiology.In response to the fact that astronomy has evolved enormously over the last few years, only a few chapters of this book have been left unmodified.Long considered a standard text for physical science majors, Fundamental Astronomy is also an excellent reference and entrée for dedicated amateur astronomers. For their benefit the introductory chapter has been extended to give a brief summary of the different types of celestial objects