17.07.2021 | History

4 edition of AManual of Spherical and Practical Astronomy found in the catalog.

AManual of Spherical and Practical Astronomy

embracing the general problems of spherical astronomy, the special applications to nautical astronomy, and the theory and use of fixed and portable astronomical instruments, with an appendix on the method of least squares.

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Published by Administrator in J. B. Lippincott Company

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    • J. B. Lippincott Company


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        StatementJ. B. Lippincott Company
        PublishersJ. B. Lippincott Company
        Classifications
        LC Classifications1891
        The Physical Object
        Paginationxvi, 97 p. :
        Number of Pages90
        ID Numbers
        ISBN 10nodata
        Series
        1nodata
        2
        3
        v. 1. Spherical astronomy. v. 2. Theory and use of astronomical instruments. Method of least squares.

        nodata File Size: 9MB.


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The divisions of the arc are usually 10' each, which are subdivided by the vernier to 10".

A manual of spherical and practical astronomy (1863 edition)

If this point is to the left of the actual zero of the scale by. Fortunately the book is available for free on-line which you can reference when there's an obvious error, but for situations where one character resembles another, it's not obvious there's an error. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. 1 represents the most common form of the sextant constructed upon these principles. Customer Reviews: This is a really bad reprint. And the sheer number of errors makes this tedious.

Worse, even the photocopying of this book is poor, being very light in a lot of places, and very dark in some. Then incline the instrument until its plane makes but a small angle with the horizon ; if the images still coincide, the two glasses are parallel: consequently, if the index glass is perpendicular to the plane of the sextant, the horizon glass is also in adjustment.

Best Sellers Rank: 6,941,731 in Books• The methods referred 'to in the preceding articles are, therefore, generally to be preferred. The law of the coefficients in 71 is that the coefficient of any odd difference is obtained from that of the preceding odd difference by introducing two factors, one at the beginning and the other at the end of the line of factors, observing as before that these factors are respectively greater and less by unity than those next to which they are placed; and the coefficients of the even differences are obtained from the next preceding even differences in the same manner.

In such cases the two equal altitudes may be observed within a few minutes of each other, and all corrections, whether for change of latitude or change of declination, may be disregarded. The mirrors M and m are of plate glass, silvered. — The time of the meridian transit of a fixed star is the mean between the two times when it is at the same altitude east and west of the meridian; so that the observation of these two times is a convenient substitute for that of the meridian passage when a transit instrument is not.

An edition of 1863 A manual of spherical and practical astronomy embracing the general problems of spherical astronomy, the special applications to nautical astronomy, and the theory and use of fixed and portable astronomical instruments. The frame is of brass, constructed so as to combine strength with lightness; the graduated arc, inlaid in the brass, is usually of silver, sometimes of gold, or platinum.

The original AManual of Spherical and Practical Astronomy from the 1800's which didn't have a great process to begin with, and the publisher of this version has shrunk down the text to fit on smaller paper, which by itself makes some text unreadable.

Equal altitudes of a fixed star. The upper half of the glass m is left. On the other hand, let us suppose two telescopes, with object glasses of equal diameters, to have different magnifying powers; then one and the same quantity of light is distributed over the larger AManual of Spherical and Practical Astronomy over the smaller image.