Download or read book Half hours with the Stars written by Richard Anthony Proctor and published by . This book was released on 1876 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Half hours with the Stars written by Richard Anthony Proctor and published by . This book was released on 1911 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Half hours with the Stars a Plain and Easy Guide to the Knowledge of the Constellations written by Richard Anthony Proctor and published by . This book was released on 1892 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Showing, in 12 maps, the position of the principal star-groups night after night throughout the year, with introduction and a separate explanation of each map. True for every year.
Download or read book Half hours with the Stars written by Proctor Richard Anthony and published by . This book was released on 1871 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Half Hours With the Stars written by Richard Anthony Proctor and published by Forgotten Books. This book was released on 2015-06-25 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Half-Hours With the Stars: A Plain and Easy Guide to the Knowledge of the Constellations, Showing, in Twelve Maps, the Position for the United States of the Principal Star Groups Night After Night Throughout the Year; With Introduction and a Separate Explanation of Each Map, True F It is very easy to gain a knowledge of the stars, if the learner sets to work in the proper manner. But he commonly meets with a difficulty at the outset of his task. He provides himself with a set of the ordinary star-maps, and then finds himself at a loss how to make use of them. Such maps tell him nothing of the position of the constellations on the sky. If he happen to recognize a constellation, then indeed his maps, if properly constructed, will tell him the names of the stars forming the constellation, and also he may be able to recognize a few of the neighboring constellations. But when he has done this he may meet with a new difficulty, even as respects this very constellation. For if he look for it again some months later, he will neither find it in its former place nor will it present the same aspect, - if indeed it happen to be above the horizon at all. It is clear, then, that what the learner wants is a set of maps specially constructed to show him in what part of the sky the constellations are to be looked for. He ought on any night of the year to be able to turn at once to the proper map, and in that map he ought to see at once what to look for, toward what point of the compass each visible constellation lies, and how high it is above the horizon. And, if possible (as the present work shows is the case), one map ought to suffice to exhibit the aspect of the whole heavens, in order that the beginner may not be confused by turning from map to map, and trying to find out how each fits in with the others. It is to fulfil these requirements that the present maps have been constructed. Each exhibits the aspect of the whole sky at a given day and hour. The circumference of the map represents the natural horizon, the middle of the map representing the part of the sky which lies immediately overhead. If the learner hold one of these maps over his head, so as to look vertically upwards at it, the different parts of the horizon marked in round the circumference being turned towards the proper compass points, he will see the same view of the heavens as he would if he were to lie on his back and look upwards at the sky, only that the map is a planisphere and the sky a hemisphere. But although this illustration serves to indicate the nature of the maps, the actual mode of using them is more convenient. Let it first be noted that properly speaking the maps have neither top, bottom, nor sides. Each map may be held with any part of the circumference downward: then the centre of the map is to be looked upon as the top for that part of the circumference. The portion of the map lying beneath the centre represents the portion of the sky lying between the point overhead and a certain part of the horizon - the part in fact corresponding to the particular part of the circumference which is turned downwards. Thus if on any night we wish to learn what are the stars towards the north, we look for the map corresponding to that night. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
Download or read book Half Hours with the Stars written by Richard Anthony Proctor and published by Forgotten Books. This book was released on 2017-12 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Half-Hours With the Stars: A Plain and Easy Guide to the Knowledge of the Constellations, Showing, in Twelve Maps, the Position for the United States of the Principal Star Groups Night After Night Throughout the Year; With Introduction and a Separate Explanation of Each Map, True F But although this illustration serves to indicate the nature Of the maps, the actual mode of using them is more convenient. Let it first be noted that properly speaking the maps have neither top, bottom, nor sides. Each map may be held with any part of the circumference downward then the centre of the map is to be looked upon as the top for that part of the circumference. The portion Of the map lying beneath the centre represents the portion of the sky lying between the point overhead and a certain part of the horizon - the part in fact corresponding to the particular part of the circum ference which is turned downwards. Thus if on any night we wish to learn what are the stars towards the north, we look for the map corresponding to that night. At the hour named the stars toward the north will be those shown between the centre Of the map and the top; and, of course. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book The Steam Turbine written by Robert Morrison Neilson and published by . This book was released on 1902 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Higher Mathematics for Students of Chemistry and Physics written by Joseph William Mellor and published by . This book was released on 1902 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book The Analytical Chemistry of Uranium written by Harry Brearley and published by . This book was released on 1903 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Expanse of Heaven a Series of Essays on the Wonders of the Firmanent written by Richard Anthony Proctor and published by London ; New York : Longmans, Green. This book was released on 1902 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book A Complete Class book of Naval Architecture written by W. James Lovett and published by . This book was released on 1905 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
