Bøger af Michael A. Covington

In this study Michael Covington considers the origins and development of the theories of sentence structure formulated by the Modistae, a group of grammarians and logicians who flourished in Paris between about 1270 and 1310. Some of the concepts of the medieval theoretical framework, notably government and dependency, have survived to the present day, and Dr Covington introduces insights from modern grammatical theories where appropriate. Nevertheless his principal aim is not to compare medieval and modern theories, or to provide a comprehensive historical study. Rather, recognising that 'it is the difference as much as the similarity that makes the Modistae interesting', Dr Covington offers an original critical exegesis of these influential theories. The book will be accessible both to linguists who may know little about medieval philosophy and to medievalists who may know little about linguistics.

First published in 1999, this much expanded and updated edition of the best-selling handbook Astrophotography for the Amateur provides a complete guide to taking pictures of stars, galaxies, the Moon, the Sun, comets, meteors and eclipses, using equipment and materials readily available to the hobbyist. In this new edition, the book has been completely revised and now includes new chapters on computer image processing and CCD imaging; expanded advice on choosing cameras and telescopes; completely updated information about the films; a much larger bibliography; and hundreds of new photographs (in colour, and black and white) demonstrating the latest equipment and techniques. Astrophotography for the Amateur has become the standard handbook for all amateur astronomers. This expanded and updated edition provides an ideal introduction for beginners and a complete handbook for advanced amateurs. It will also appeal to photography enthusiasts who can discover how to take spectacular images with only modest equipment.

How to Use a Computerized Telescope is the first handbook that describes how to start observing the night sky with a computerized telescope. Full of practical advice and tips for troubleshooting, it explains how your telescope tracks sky movements, and how to get the most out of any computerized telescope.