but also for circumcenter, centroid, and excenter, we had similar procedure.
Table 2-1] Other centers of tetrahedron Position in Position in Centers 2D Geometry 3D Geometry Circumcenter A point where three A point where perpendicular bisectors perpendicular bisecting intersect planes intersect Centroid A point where three A point where median medians intersect planes (Planes with a edge and its opposite edge's middle point) intersect Excenter A point where exterior A point where exterior angle bisectors intersect dihedral-bisecting planes intersect Centers Property Circumcenter Becomes the center of the circumcircle and the circumsphere, respectively Centroid Divides the line which connects a point and the opposite planes' centroid as 2:1, 3:1 respectively Excenter Becomes the center of the excircle and the exosphere, respectively
where [theta] is the eccentric variable or the angle that a positive semi straight line, revolving around the excenter S(s, [epsilon]) - or solar point, (Kepler affirmed that planets rotate around the Sun on circular orbits, but the Sun is not in the center of the orbits)--it makes it with Ox axis , , , and [alpha] is the centric variable or the circular arc, of the unity circle, from the origin of the arc A(1, 0) to a current point on circle W(1, [alpha]) [equivalent to] W(r = rex[theta], [theta]) the unitary eccentricity is s = e/R, or the distance between S and O, and excenter S or E are ejected from the center O on the [epsilon]direction.
It can be observed, in the same time with the increase of the numerical eccentricity value s, the functions existence domain becomes restricted to the interval where a line, revolving from the excenter S(s; [epsilon]), external to unity circle, intersects the unity circle.
the eccentrical variable: t [equivalent to] [theta](mod2[pi]) such that, for the excenter S going, on the x axis ([epsilon] = 0), to infinite (s [right arrow] [infinity]), the domainI goes to zero (I [right arrow] 0).
The excenter and teleconverter are optional from Baader but are included when the prominence coronagraph is purchased from Astro-Physics.
At this magnification it was essential to use the excenter device to move the Sun's limb to the center of the field of view.
In addition to the core scan and distribution functionality, and a single seat of eCopy PDF Pro Office desktop software, eCopy ShareScan Suite includes the eCopy Document Extender and Forms Processing Excenter
, and lets users select up to three eCopy Connectors to back-end systems.