Because the meridians are not parallel. They're the slices you make when
you want to cut an orange into sections, where each slice goes through the
same point on top and the same point on the bottom, and the pieces taper,
from wide at the skin to nothing at the middle.
The parallels are literally parallel. They're the slices you make when you
want to cut the orange into "rounds", where the slices are all parallel, and
the pieces are all circular disks of different sizes.
The distance between meridians is only constant at a given latitude. For example, the distance between 5 degrees longitude and 10 degrees longitude is the same as that between 20 degrees and 25 degrees at the equator (e.g., 5 degrees is approximately 557 km or 346 miles). The distance between meridians is largest on the equator (latitude 0 degrees) and smallest at the poles. In fact, at the poles all meridians intersect at a single point so the distance between the lines at that intersection point is zero.
Because the meridians are not parallel. They're the slices you make when
you want to cut an orange into sections, where each slice goes through the
same point on top and the same point on the bottom, and the pieces taper,
from wide at the skin to nothing at the middle.
The parallels are literally parallel. They're the slices you make when you
want to cut the orange into "rounds", where the slices are all parallel, and
the pieces are all circular disks of different sizes.
All meridians have the same nominal length because they all have the same end points - the north and south poles - and all traverse the same sphere, the Earth.
It is because all lines of longitude originate and converge there.
Meridians of constant longitude cross parallels of constant latitude. Parallels of constant latitude cross meridians of constant longitude. At each intersection of a meridian and a parallel, the lines are perpendicular (form 90° angles).
Grating constant is the distance between two rulings present on the grating plate.
Between the equator and either pole, no matter what interval you choose foryour display of the meridians of longitude, they all gradually converge, untilthey all meet in a single point at the pole. The space between any two meridians,at any latitude, is(the space between them at the equator) x (cosine of the latitude). But their behavior on both sides of the equator is perfectly symmetrical.That is, as you move farther from the equator, the meridians converge inthe southern hemisphere exactly as they do in the northern one.
-- Parallels are associated with latitudes. Meridians are associated with longitudes. -- Parallels are parallel, and no tweo parallels intersect. All meridians intersect all other meridians, at two places. -- Every point on a parallel has the same latitude. Every point on a meridian has the same longitude. -- Every parallel in the same hemisphere has a different length. Every meridian on Earth has the same length. -- Every parallel is a full circle. Every meridian is a semi-circle. -- Every parallel crosses all longitudes. Every meridian crosses all latitudes. -- The distance between two parallels is the same at every longitude. The distance between two meridians depends on the latitude where it's measured. -- To cross all parallels, you only have to travel 12,000 miles. To cross all meridians, you have to travel 24,000 miles.
the minimium distance between the two meridians is at the poles because all the meridians comerge at the poles
degrees
No but parallel lines have a constant distance between them
That is usually measured in degrees.
Meridians of constant longitude.
Because the meridians are not parallel. They're the slices you make when you want to cut an orange into sections, where each slice goes through the same point on top and the same point on the bottom, and the pieces taper, from wide at the skin to nothing at the middle. The parallels are literally parallel. They're the slices you make when you want to cut the orange into "rounds", where the slices are all parallel, and the pieces are all circular disks of different sizes.
Because the meridians are not parallel. They're the slices you make when you want to cut an orange into sections, where each slice goes through the same point on top and the same point on the bottom, and the pieces taper, from wide at the skin to nothing at the middle. The parallels are literally parallel. They're the slices you make when you want to cut the orange into "rounds", where the slices are all parallel, and the pieces are all circular disks of different sizes.
It is because all lines of longitude originate and converge there.
Assuming the Earth's circumference is 40,075.017 km at the equator, and considering there are 360 meridians which results in 360 meridional regions; 40,075.017/360= ~ 111.32 km = 69.171 miles
because the north pole is 90 degrees latitude
"Lines" of constant longitude are "meridians".
Meridians of constant longitude cross parallels of constant latitude. Parallels of constant latitude cross meridians of constant longitude. At each intersection of a meridian and a parallel, the lines are perpendicular (form 90° angles).