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KMGC
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http://math2.org/cgi-bin/mmb/server.pl?action=image&msgid=62326&fname=ringname.gif
I know that polar concentric rings are known as "lines of
latitude" or parallels, but what are equatorially concentric rings
called?--e.g., the 90° equatorially concentric ring would be a line
of longitude or meridian, but what about the other, semi-circle
rings **parallel TO A MERIDIAN**?
In terms of arcradius/radius of curvature, the "perpendicular
meridian" value is known as the "normal": Is it that a meridian is
the "prime normal", equals the 90° normal; the parallel
semi-circle/ellipse 1° away is the 89° normal, 2° away is the 88°
normal, 3° away is the 87° normal, etc., in the same way that the
equator is the 0° latitude, 1° away is the 1° latitude, etc.?
Or, as an annulus is a band bounded by two concentric rings, could
all of the rings comprising the annulus be something like
"annulobes"?
_ _ _ _ ~Kaimbridge~
I know that polar concentric rings are known as "lines of
latitude" or parallels, but what are equatorially concentric rings
called?--e.g., the 90° equatorially concentric ring would be a line
of longitude or meridian, but what about the other, semi-circle
rings **parallel TO A MERIDIAN**?
In terms of arcradius/radius of curvature, the "perpendicular
meridian" value is known as the "normal": Is it that a meridian is
the "prime normal", equals the 90° normal; the parallel
semi-circle/ellipse 1° away is the 89° normal, 2° away is the 88°
normal, 3° away is the 87° normal, etc., in the same way that the
equator is the 0° latitude, 1° away is the 1° latitude, etc.?
Or, as an annulus is a band bounded by two concentric rings, could
all of the rings comprising the annulus be something like
"annulobes"?
_ _ _ _ ~Kaimbridge~
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