[ToC]

 

H. M. Dowsett, Wireless Telephony and Broadcasting, Gresham Pub. Co., 1924

A PERSPECTIVE VIEW OF THE ELECTROSTATIC FIELD FORMING THE WAVE-FRONT WHEN IT HAS REACHED THE FREE END OF THE AERIAL

The perspective diagram of fig. 11, which shows the field of electric strain proceeding from the end of a bent aerial at the moment when it has reached its maximum potential, is of assistance in showing that the wave area is not directly proportional to the wave energy; for, if the aerial be regarded as one plate of a condenser and the earth as two other plates lying in the direction P0° and P180°, the intensity of the electric field from the aerial to either earth plate will be in the inverse proportion to the lengths of the lines of electric strain, or directly to the capacity in two directions.