全球投影地图

Globular \Glob"u*lar\, a. [Cf. F. globulaire.]
Globe-shaped; having the form of a ball or sphere; spherical,
or nearly so; as, globular atoms. --Milton.

{Globular chart}, a chart of the earth's surface constructed
on the principles of the globular projection.

{Globular projection} (Map Projection), a perspective
projection of the surface of a hemisphere upon a plane
parallel to the base of the hemisphere, the point of sight
being taken in the axis produced beyond the surface of the
opposite hemisphere a distance equal to the radius of the
sphere into the sine of 45[deg].

{Globular sailing}, sailing on the arc of a great circle, or
so as to make the shortest distance between two places;
circular sailing.


Chart \Chart\ (ch[aum]rt; k[aum]rt Obs.), n. [A doublet of card:
cf. F. charte charter, carte card. See {Card}, and cf.
{Charter}.]
1. A sheet of paper, pasteboard, or the like, on which
information is exhibited, esp. when the information is
arranged in tabular form; as, an historical chart.

2. A map; esp., a hydrographic or marine map; a map on which
is projected a portion of water and the land which it
surrounds, or by which it is surrounded, intended
especially for the use of seamen; as, the United States
Coast Survey charts; the English Admiralty charts.

3. A written deed; a charter.

{Globular chart}, a chart constructed on a globular
projection. See under {Globular}.

{Heliographic chart}, a map of the sun with its spots.

{Mercator's chart}, a chart constructed on the principle of
Mercator's projection. See {Projection}.

{Plane chart}, a representation of some part of the
superficies of the globe, in which its spherical form is
disregarded, the meridians being drawn parallel to each
other, and the parallels of latitude at equal distances.


{Selenographic chart}, a map representing the surface of the
moon.

{Topographic chart}, a minute delineation of a limited place
or region.