|
|
|
|
|||||
|
||||||
Subject: Re: Mathematical Question
From: Robert J. Park (rjpark2@XXX.XXX)
Date: Thu Sep 19 2002 - 21:29:57 EDT
If you are comparing an Arc on a Circle to something on a Sphere, you can also have an Arc on a Sphere, but you are probably thinking in terms of a Spherical Triangle. As Brian listed, there are several names that could apply, but Spherical Triangle is the most common. When it is placed in 2 dimensions, some of my students refer to it as a "Bulging Triangle" because of the curved sides. That is because all three side are actually Arcs on the surface of the Sphere.
Bob Park
rjpark2@XXX.XXX
PhD - Mathematics
Some or us - the Dreamers - were born to dance upon the wind.
----- Original Message -----
From: Robert Eno
To: NAVIGATION-L@XXX.XXX
Sent: Thursday, September 19, 2002 5:30 PM
Subject: Mathematical Question
Greetings list,
Given the rather esoteric nature of some of the recent discussions, I am hopeful that one of you will have the answer to a long-standing question of mine.
What is the term used to describe a small 2 dimensional section of a sphere? Or to put it another way, if a small section of a circle is called an "arc", what is the equivalent in a sphere?
|