Elementary treatise on physics, experimental and applied, for the use of colleges and schools; (1904)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, tr, Reinhold, Arnold William, 1843- ed · New York, W. Wood & Co. · leaf 744
Fig. 701 Fig. 702 fig. 701. On the left of fig. 702 is seen a metal frame across which isstretched a horsehair, forming a sight-vane. Exactly opposite this is aright-angled prism P enclosed in a metal case, with an eyehole and a slitas represented at the side of the figure When an observation is to… … -733] Inclination or Dip. Magnetic Equator 723 are seen to be in the same line ; the observer, looking through the eyehole,notes the angle which the needle makes ; a similar observation is made with-another object, and thus the angle between them, or their bearing, is given. The sight-vane moves on…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
