On the effect produced on the deviation of the compass by the length and arrangement of the compass needles; and on a new mode of correcting the quadrantal deviation | Zendy

Archibald W. Smith | Zendy; Frederick J. Evans | Zendy

Open Access

On the effect produced on the deviation of the compass by the length and arrangement of the compass needles; and on a new mode of correcting the quadrantal deviation

Author(s) -

Archibald W. Smith,

Frederick J. Evans

Publication year - 1862

Publication title -

proceedings of the royal society of london

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.814

H-Index - 135

eISSN - 2053-9126

pISSN - 0370-1662

DOI - 10.1098/rspl.1860.0037

Subject(s) - compass , azimuth , physics , mode (computer interface) , absolute deviation , geodesy , relative standard deviation , head (geology) , optics , geology , mathematics , computer science , statistics , quantum mechanics , detection limit , operating system , geomorphology

When the length of the compass needle may be neglected compared with the distance of the iron which acts on a ship’s compass, the deviation is accurately expressed by the formula sinδ =A cosδ + B sin ξ' + C cos ξf'+ D sin (ξ + ξ')+ E cos (ξ+ ξ'); in which ξ is the azimuth of the ship’s head measured eastward from thecorrect magnetic north ; ξ' is the same azimuth, but measured from the direction of thedisturbed needle ;

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