Sympathetic Vibration

The establishment of periodic movement in one body by impulses of the same period communicated to it from another body in motion. Thus if two tuning forks are of the same pitch and one is sounded the other will begin to sound by sympathy, the sound waves communicating the nece ary periodic impulses to it. Sympathetic vibrations are utilized in harmonic telegraphy. (See Harmonic Receiver--Telegraph, Harmonic.) 501   STANDARD ELECTRICAL DICTIONARY. **T** Symbol of time.