เมื่อต่อแหล่งกำเนิดไฟฟ้ากระแสสลับเข

When the AC power source is plugged into the air that is in the vertical line. Electric charge in a line, the air moves back with the acceleration in the vertical, and because the electric charge moving with acceleration, so radiation will cause electromagnetic waves coming from the antenna out in all directions except the North is in a straight line to the antenna of the same electromagnetic waves occur in the direction perpendicular to the antenna.

When the AC power source, the antenna is vertical. Charged in aerial moves back and forth in the vertical acceleration and the acceleration due to electrostatic charge will radiate electromagnetic waves, thus spreading out in all directions from the antenna. Except in a straight line, the same antenna, electromagnetic waves in the direction perpendicular to the antenna.

When the alternating current sources with the antenna in the vertical. Capacitor antenna will move back in with acceleration in vertical and the charge that moving at the speed to radiation can cause electromagnetic wave spread out from สายอากาศทุกทิศทาง. Except for the direction in a straight line in the direction of incidence electromagnetic wave antenna is perpendicular to the air line.