The well-known chart produced by Halley, whereon a number of curved lines show the variation of the compass in the places they pass through. The admiralty variation chart has been brought to great perfection.
·noun Change of termination of words, as in declension, conjugation, derivation, ·etc. II. Variatio...
Webster's Dictionary of the English Language
A term applied to the deviation of the magnetic needle or compass, from the true north point towards...
The Sailor's Word-Book
·noun A written deed; a charter. II. Chart ·vt To lay down in a chart; to <<Map>>; to <<Delineate>>...
, or sea-chart A hydrographical map, or a projection of some part of the earth's superficies in pl...
Is the change in the declination of the needle observed at different times in the same place. ...
The change produced in the right ascension or declination of a star by the precession of the equinox...
·- ·see under Chart, and see Mercator's projection, under <<Projection>>. ...
·- A chart or map on which the lines of the shore, islands, shoals, harbors, ·etc., are delineated. ...
See chart ...
The name given to the protracted curves of the variation of the compass, known as the variation char...
Introduced by Gerard Mercator, circa 1556: it is a projection of the surface of the earth in the pla...
One constructed on the supposition of the earth's being an extended plane, and therefore but little ...
An inequality in the movement of our satellite, amounting at certain times to 37′ in longitude: it w...