longitude 音标拼音: [l'ɑndʒət
, ud]
n . 经度,经线
经度,经线
longitude 经度
longitude n 1 :
the angular distance between a point on any meridian and the prime meridian at Greenwich Longitude \
Lon "
gi *
tude \,
n . [
F .,
fr .
L .
longitudo ,
fr .
longus long .]
1 .
Length ;
measure or distance along the longest line ; --
distinguished from {
breadth }
or {
thickness };
as ,
the longitude of a room ;
rare now ,
except in a humorous sense .
--
Sir H .
Wotton .
[
1913 Webster ]
The longitude of their cloaks . --
Sir .
W .
Scott .
[
1913 Webster ]
Mine [
shadow ]
spindling into longitude immense .
--
Cowper .
[
1913 Webster ]
2 . (
Geog .)
The arc or portion of the equator intersected between the meridian of a given place and the meridian of some other place from which longitude is reckoned ,
as from Greenwich ,
England ,
or sometimes from the capital of a country ,
as from Washington or Paris .
The longitude of a place is expressed either in degrees or in time ;
as ,
that of New York is 74 [
deg ]
or 4 h .
56 min .
west of Greenwich .
[
1913 Webster ]
3 . (
Astron .)
The distance in degrees ,
reckoned from the vernal equinox ,
on the ecliptic ,
to a circle at right angles to the ecliptic passing through the heavenly body whose longitude is designated ;
as ,
the longitude of Capella is 79 [
deg ].
[
1913 Webster ]
{
Geocentric longitude } (
Astron .),
the longitude of a heavenly body as seen from the earth .
{
Heliocentric longitude },
the longitude of a heavenly body ,
as seen from the sun '
s center .
{
Longitude stars },
certain stars whose position is known ,
and the data in regard to which are used in observations for finding the longitude ,
as by lunar distances .
[
1913 Webster ]
Refraction \
Re *
frac "
tion \ (
r ?*
fr ?
k "
sh ?
n ),
n . [
F .
r ['
e ]
fraction .]
1 .
The act of refracting ,
or the state of being refracted .
[
1913 Webster ]
2 .
The change in the direction of ray of light ,
heat ,
or the like ,
when it enters obliquely a medium of a different density from that through which it has previously moved .
[
1913 Webster ]
Refraction out of the rarer medium into the denser ,
is made towards the perpendicular . --
Sir I .
Newton .
[
1913 Webster ]
3 . (
Astron .)
(
a )
The change in the direction of a ray of light ,
and ,
consequently ,
in the apparent position of a heavenly body from which it emanates ,
arising from its passage through the earth '
s atmosphere ; --
hence distinguished as atmospheric refraction ,
or astronomical refraction .
(
b )
The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction ,
in order to obtain the true altitude .
[
1913 Webster ]
{
Angle of refraction } (
Opt .),
the angle which a refracted ray makes with the perpendicular to the surface separating the two media traversed by the ray .
{
Conical refraction } (
Opt .),
the refraction of a ray of light into an infinite number of rays ,
forming a hollow cone .
This occurs when a ray of light is passed through crystals of some substances ,
under certain circumstances .
Conical refraction is of two kinds ;
external conical refraction ,
in which the ray issues from the crystal in the form of a cone ,
the vertex of which is at the point of emergence ;
and internal conical refraction ,
in which the ray is changed into the form of a cone on entering the crystal ,
from which it issues in the form of a hollow cylinder .
This singular phenomenon was first discovered by Sir W .
R .
Hamilton by mathematical reasoning alone ,
unaided by experiment .
{
Differential refraction } (
Astron .),
the change of the apparent place of one object relative to a second object near it ,
due to refraction ;
also ,
the correction required to be made to the observed relative places of the two bodies .
{
Double refraction } (
Opt .),
the refraction of light in two directions ,
which produces two distinct images .
The power of double refraction is possessed by all crystals except those of the isometric system .
A uniaxial crystal is said to be optically positive (
like quartz ),
or optically negative (
like calcite ),
or to have positive ,
or negative ,
double refraction ,
according as the optic axis is the axis of least or greatest elasticity for light ;
a biaxial crystal is similarly designated when the same relation holds for the acute bisectrix .
{
Index of refraction }.
See under {
Index }.
{
Refraction circle } (
Opt .),
an instrument provided with a graduated circle for the measurement of refraction .
{
Refraction of latitude }, {
longitude }, {
declination }, {
right ascension },
etc .,
the change in the apparent latitude ,
longitude ,
etc .,
of a heavenly body ,
due to the effect of atmospheric refraction .
{
Terrestrial refraction },
the change in the apparent altitude of a distant point on or near the earth '
s surface ,
as the top of a mountain ,
arising from the passage of light from it to the eye through atmospheric strata of varying density .
[
1913 Webster ]
Heliocentric \
He `
li *
o *
cen "
tric \
(
h [=
e ]`
l [
i ^]*[-
o ]*
s [
e ^]
n "
tr [
i ^]
k ),
Heliocentrical \
He `
li *
o *
cen "
tric "
al \ (
h [=
e ]`
l [
i ^]*[-
o ]*
s [
e ^]
n "
tr [
i ^]*
kal ),
a .
[
Helio -
centric ,
centrical :
cf .
F .
h ['
e ]
liocentrique .]
(
Astron .)
pertaining to the sun '
s center ,
or appearing to be seen from it ;
having ,
or relating to ,
the sun as a center ; --
opposed to {
geocentrical }.
[
1913 Webster ]
{
Heliocentric parallax }.
See under {
Parallax }.
{
Heliocentric place }, {
latitude }, {
longitude },
etc . (
of a heavenly body ),
the direction ,
latitude ,
longitude ,
etc .,
of the body as viewed from the sun .
[
1913 Webster ]
138 Moby Thesaurus words for "
longitude ":
Antarctic Zone ,
Arctic Circle ,
Arctic Zone ,
Cartesian coordinates ,
Frigid Zones ,
Lambert conformal projection ,
Mercator projection ,
Miller projection ,
Torrid Zone ,
Tropic of Cancer ,
Tropic of Capricorn ,
Variable Zones ,
abscissa ,
aeronautical chart ,
altitude ,
aphelion ,
apogee ,
astronomical chart ,
astronomical longitude ,
atlas ,
autumnal equinox ,
azimuth ,
azimuthal equidistant projection ,
azimuthal projection ,
cartographer ,
cartography ,
celestial chart ,
celestial equator ,
celestial globe ,
celestial longitude ,
celestial meridian ,
chart ,
chorographer ,
chorography ,
circle ,
climate ,
climatic chart ,
clime ,
colures ,
conic projection ,
contour line ,
contour map ,
coordinates ,
cylindrical coordinates ,
cylindrical projection ,
declination ,
distance ,
ecliptic ,
equator ,
equator coordinates ,
equinoctial ,
equinoctial circle ,
equinoctial colure ,
equinox ,
extension ,
extent ,
galactic longitude ,
general reference map ,
geocentric longitude ,
geodetic longitude ,
globe ,
gnomonic projection ,
graphic scale ,
great circle ,
grid line ,
hachure ,
heliocentric longitude ,
heliographic chart ,
horse latitudes ,
hydrographic chart ,
index ,
infinity ,
isoline ,
latitude ,
layer tint ,
legend ,
length ,
lengthiness ,
linear measures ,
long time ,
longitude in arc ,
longness ,
map ,
map maker ,
map projection ,
mapper ,
measure ,
meridian ,
mileage ,
orbit ,
ordinate ,
overall length ,
parallel ,
perigee ,
perihelion ,
period ,
perpetuity ,
photogrammetrist ,
photogrammetry ,
photomap ,
phototopography ,
physical map ,
polar coordinates ,
political map ,
polyconic projection ,
prime meridian ,
projection ,
reach ,
relief map ,
representative fraction ,
right ascension ,
road map ,
roaring forties ,
scale ,
sinusoidal projection ,
small circle ,
solstitial colure ,
span ,
special map ,
stretch ,
subtropics ,
terrain map ,
terrestrial globe ,
the line ,
thematic map ,
topographer ,
topographic chart ,
topography ,
trajectory ,
transportation map ,
tropic ,
tropics ,
vernal equinox ,
weather chart ,
weather map ,
yardage ,
zodiac ,
zone
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Latitude and Longitude Finder on Map Get Coordinates The longitude is defined as an angle pointing west or east from the Greenwich Meridian, which is taken as the Prime Meridian The longitude can be defined maximum as 180° east from the Prime Meridian and 180° west from the Prime Meridian
Longitude - Wikipedia Longitude ( ˈlɒndʒɪtjuːd , AU and UK also ˈlɒŋɡɪ - ) [1][2] is a geographic coordinate that specifies the east - west position of a point on the surface of the Earth, or another celestial body It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ)
GPS Coordinates - Latitude and Longitude Finder Longitude is the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object Latitude is the angular distance of a place north or south of the earth's equator
Latitude and longitude | Definition, Examples, Diagrams, Facts . . . Longitude is a measurement of location east or west of the prime meridian at Greenwich, London, England, the specially designated imaginary north-south line that passes through both geographic poles and Greenwich
Latitude Longitude Finder | Get GPS Coordinates by Address or Map Latitude and longitude are a coordinate system to locate any point on Earth Latitude measures north-south (0° at the equator to 90° at the poles), while longitude measures east-west (0° at the Prime Meridian to 180° east or west)
LONGITUDE Definition Meaning - Merriam-Webster The imaginary (but very important) lines of longitude run from the North Pole to the South Pole Each is identified by the number of degrees it lies east or west of the so-called prime meridian in Greenwich, England (part of London)
GPS coordinates, latitude and longitude with interactive Maps Find the GPS Coordinates of any address or vice versa Get the latitude and longitude of any GPS location on Earth with our interactive Maps
What is longitude? - NOAAs National Ocean Service Lines of longitude, also called meridians, are imaginary lines that divide the Earth They run north to south from pole to pole, but they measure the distance east or west Longitude is measured in degrees, minutes, and seconds
What Is Longitude and Latitude? - timeanddate. com Cartographers and geographers trace horizontal and vertical lines called latitudes and longitudes across Earth's surface to locate points on the globe Longitudes and latitudes form Earth's geographical coordinates
Latitude and Longitude - Science Notes and Projects Longitude (λ or lambda) specifies the east-west position of a point on the Earth’s surface Each line of longitude runs from pole to pole and is called a meridian