Crystal detectors, [146];
characteristic of, [148];
circuit of, [150];
theory of, [147]

Current, transient, [114];
radio, [144]

Cycle, [94], [97]

Damped oscillations, [114]

Demodulation, [231]

Detection, explained, [146]

Detectors, audion, [126];
crystal, [146]

Direct currents, [205]

Dissociation, [22]

Distortion, of wave form, [163]