Bipolar cylindrical coordinates
Bipolar cylindrical coordinates are a three-dimensional orthogonal coordinate system that results from projecting the two-dimensional bipolar coordinate system in the
perpendicular formula_1-direction. The two lines of foci 
formula_2 and formula_3 of the projected Apollonian circles are generally taken to be 
defined by formula_4 and formula_5, respectively, (and by formula_6) in the Cartesian coordinate system.

The term "bipolar" is often used to describe other curves having two singular points (foci), such as ellipses, hyperbolas, and Cassini ovals. However, the term "bipolar coordinates" is never used to describe coordinates associated with those curves, e.g., elliptic coordinates.
Q2588831
orthogonal
Concept
Q11210
coordinate system
Concept
Q2383591
bipolar coordinate system
Concept
Q3568
foci
Concept
Q773862
Apollonian circles
Concept
Q62912
Cartesian coordinate system
Concept
Q40112
ellipse
Concept
Q165301
hyperbola
Concept
Q728699
Cassini oval
Concept
Q1332432
elliptic coordinates
DIS
Q4915481
Bipolar cylindrical coordinates
Concept
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+4^^http://www.w3.org/2001/XMLSchema#decimal
4
NUMBER
+5^^http://www.w3.org/2001/XMLSchema#decimal
5
NUMBER
+6^^http://www.w3.org/2001/XMLSchema#decimal
6
NUMBER
subclass of
subclass of
subclass of