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P is the Celestial Pole (either North or South). It is a fixed point. Z is the observer's zenith, or their position on the celestial sphere. X is the position of a celestial body, such as the sun, moon, a planet, or a star.
The point P is the inversion point of Q; the polar is the line through P that is perpendicular to the line containing O, P and Q. In geometry , a pole and polar are respectively a point and a line that have a unique reciprocal relationship with respect to a given conic section .
The J-pole antenna is an end-fed omnidirectional half-wave antenna that is matched to the feedline by a shorted quarter-wave parallel transmission line stub. [5] [1] [6] For a transmitting antenna to operate efficiently, absorbing all the power provided by its feedline, the antenna must be impedance matched to the line; it must have a resistance equal to the feedline's characteristic impedance.
Reginald Pole is a major character in Queen of Martyrs: The Story of Mary I by Samantha Wilcoxson. Reginald Pole, along with his brothers, sister, and mother, are the central family in Philippa Gregory's historical novel The King's Curse.
A pole route (or pole line in the US) is a telephone link or electrical power line between two or more locations by way of multiple uninsulated wires suspended between wooden utility poles. This method of link is common especially in rural areas where burying the cables would be expensive.