Astronomy Without a Telescope

Astronomy Without a Telescope
Astronomy Without a Telescope
Excerpt from Astronomy Without a Telescope: A Guide to the Constellations, and Introduction to the Study of the Heavens With the Unassisted SightThe last quarter of a century has seen a striking increase in the size and efficiency of astronomical telescopes. These have opened up new fields of great interest; but in the widespread attention which they have attracted there is some danger lest it should be forgotten that there are fields for which the primary instrument of all, the unassisted human eye, is still available, and to which it alone is adapted, fields which even yet are far from being exhausted.I owe my own first recognition of the extent of the work in astronomy which there is still to be done without a telescope to the sight of the Zodiacal Light whilst passing through the Red Sea. The more I studied that object, the more I was impressed with its mysteriousness, and it was in the first place, in the hope of enlisting observers in its study, that I commenced in 1900 a series of short papers in Knowledge upon the Zodiacal Light and other objects which like it need no optical assistance for their examination. The subject has grown in the writing to far larger dimensions than I had in the least anticipated at first, and no doubt it might have been expanded to a much greater length still without exhausting it.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.Эта книга будет изготовлена в соответствии с Вашим заказом по технологии Print-on-Demand компанией ООО «Книга по Требованию». Print-on-Demand - это технология печати книг по Вашему заказу на цифровом типографском оборудовании. Книга, произведенная по технологии Print-on-Demand (POD) представляет собой классическую печатную книгу с соблюдением всех стандартов качества, от офсетной бумаги и плотного картона до качественного клея, используемого при изготовлении. Черно-белая текстовая или полноцветная иллюстрированная книга (в зависимости от исходного файла, подготовленного к печати) может быть изготовлена в разных вариантах: - в мягкой обложке (Клеевое Бесшвейное Скрепление); - скрепление скобой (для книг с небольшим количеством страниц); - в твердом переплете с клееным текстовым блоком; Материалы, используемые при производстве книги: - бумага текстового блока - офсетная (белая или кремовая) 80 г/м2 - мягкая обложка - бумага мелованная 250 г/м2; - ламинация обложки - матовая или глянцевая; - твердый переплет - картон 2 мм, каптал, белые форзацы, прямой корешок - сверхпрочный полимерный клей; - каждая книга упакована в термопленку. Каждый заказ обрабатывается в индивидуальном порядке: каждой книге, напечатанной по технологии Print-on-Demand, присваивается уникальный номер.