Practical Talks by an Astronomer by Harold Jacoby - Digital Book PREFACEThe present volume has not been designed as a systematic treatise on astronomy. There are many excellent books of that kind, suitable for serious students as well as the general reader; but they are necessarily somewhat dry and unattractive, because they must aim at completeness. Completeness means detail, and detail means dryness.But the science of astronomy contains subjects that admit of detached treatment; and as many of these are precisely the ones of greatest general interest, it has seemed well to select several, and describe them in language free from technicalities. It is hoped that the book will thus prove useful to persons who do not wish to give the time required for a study of astronomy as a whole, but who may take pleasure in devoting a half-hour now and then to a detached essay on some special topic.Preparation of the book in this form has made it suitable for prior publication in periodicals; and the several essays have in fact all been printed before. But the intention of collecting them into a book was kept in mind from the first; and while no attempt has been made at consecutiveness, it is hoped that nothing of merely=======================================================================================The books in digital formats in the EPUB, MOBI and pdf. All files are in the public domain..======================================================================================== Postage & Packaging Policy: Download link, sent to buyer within 24 hours. With this link, the buyer can download to your computer all the files that are on the DVD. There is no charge for this type of shipment. ==============================================================================Copyright Notice To eCRATER VeRo Team and Publishers Association. These e-books/magazines are in The Public Domain. All content complies with eCRATER rules and regulations. No trademarks, copyrights, or eCRATER rules have been violated in this listing. This product fully conforms to eCRATER compilation and international media policy and downloadable media policy; it is NOT an unauthorised copy of any other "copyrighted product" and as such does not constitute a Copyright Violation - Unauthorised Item. If there is a legitimate copyright holder that I have not located please contact me and I will remove the relevant e-books. To our Valued Customers Our main aim is to make this wonderful Public Domain Material available to you on CD's & DVD's: the small price you pay for these CD's are for Production, Administration, Post & Packaging. All of our MP3s and e-books comply with eCRATER rules and regulations. The item is in the public domain, the copyright has lapsed, we own resale rights to it, or we are the publishers and sole copyright holders. No trademarks, copyrights, or eCRATER rules have been violated in this listing. This product fully conforms with eCRATER compilation and international media policy and downloadable media policy.