Simon Newcomb eBooks
eBooks di Simon Newcomb di Formato Pdf
A Compendium of Spherical Astronomy: With Its Applications to the Determination, and Reduction of Positions of the Fixed Stars. E-book. Formato PDF Simon Newcomb - Forgotten Books, 2017 -
The present volume is the first of a projected series having the double purpose of developing the elements of Practical and Theoretical Astronomy for the special student of the subject, and of serving as a handbook of convenient reference for the use of the working astronomer in applying methods and formulae. The plan of the series has been suggested by the authors experience as a teacher at the Johns Hopkins University, and as an investigator. The first has led him to the view that the wants of the student are best subserved by a quite elementary and condensed treatment of the subject, without any attempt to go far into details not admitting of immediate practical application. As an investigator he has frequently been impressed with the amount of time consumed in searching for the formulae and data, even of an elementary kind, which should be, in each case, best adapted to the work in hand.The most urgent want which the work is intended to supply is that of improved methods of deriving and reducing the positions and proper motions of the fixed stars. Modifications of the older methods are made necessary by the long period, 150 years, through which positions of the stars now have to be reduced, and by the extension of astrometrical and statistical researches to a great and constantly increasing number of telescopic stars.
Elements of Astronomy. E-book. Formato PDF Simon Newcomb - Forgotten Books, 2017 -
Two objects have been kept in view in preparing this little book. One was to condense those facts and laws of the science which are of most interest and importance to the general intelligent public within so small a compass as not to make a very serious addition to the curriculum of the high school or college. The other was so to present the subject that as little formal mathematics as possible should be noces sary to its mastery. Of the first object little need be said. The typical person constantly kept in mind has been the inquiring layman seek ing to know something of the heavenly bodies and their rela tion to the earth, including such subjects of human interest as the changing seasons, the measure of time, and the varying aspects of the planets.
The Stars: A Study of the Universe. E-book. Formato PDF Simon Newcomb - Forgotten Books, 2017 -
In treating such a subject it is impossible always to avoid the use of language more or less technical, except at the expense of precision and completeness of statement. An effort has however been made to limit the use of such language to the necessities of the case.