Editorial notes [on "A discussion on experimental tests of the radiation law for radio oscillators"]

The three principal methods in use at the present time for determining "radiation resistance," arranged in order of increasing precision, are the following: (a) Inserting in the ground connection of the antenna a noninductive resistance of such value that the current in the antenna is diminished in the ratio of one to the square root of two The additional resistance is then taken as equal to the non-conservative "radiation resistance." (b) Determining from the resonance cuirve of the antenna by the Bjerknes method the damping factor and calculating therefrom the apparent "radiation resistance." (c) Replacing the antenna by an artificial antenna of i(lentical effective inductance and capacity, and ascertaining what noninductive resistance must be inserted in the artificial antenna to secure in it the same current as formerly flowed in the actual antenna. We have appended for the convenience of the reader the following list of important articles and references dealing with this matter.