The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 122
da smooth curve drawn through the points enables one to de-termine what is the value of the current for any moment lyingbetween any two of those which are included in the table. Itis to be noted that the changes of current repeat themselves.Thus in the table the current is the same at 1 sec. and 25… … A current like that just treated is the same as that whichwould be produced in a circuit attached to a coil revolving veryslowly in a uniform magnetic field. (See Chap. 2, Sec. 74.)The motion has been assumed slow in order that the changescan be followed with ordinary direct-current instruments.…
Telegraph, Wireless · Radio
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