The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1872)
White, Charles J. (Charles Joyce), 1839-1917 · Philadelphia, Claxton, Remsen & Haffelfinger · leaf 64
e amount by which it is decreased being about y^thof the whole. 59. Application of Dip. — Tables have been computed inwhich may be found the proper dip for different heights abovethe surface of the earth. Dip constitutes one of the correc-tions which are to be applied at sea to the observed… … * The curved line HDis tangent to the earths surface at H. MEASUREMENT OF THE EARTH. 59 CHAPTER IV. THE EARTH. ITS SIZE, FORM, AND ROTATION. 60. Haying seen what are the construction and the adjustmentsof the principal astronomical instruments, to what uses each isadapted, and what corrections are…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
