OCR Text |
Show RADIO PRIMER Oscillations Alternating currents of very high frequency. These oscillations oscil-lations produce continuous or undamped un-damped waves, if they maintain a constant amplitude. If their amplitude ampli-tude dies down, as In .spark transmission, transmis-sion, the oscillations produce discontinuous discon-tinuous or damped waves. Radiation Transmission of energy through space in the form of e'ectro-magnetlc, e'ectro-magnetlc, or radio frequency, waves. The high frequency current in a radio transmitter is sent out to tho aerial from which they radiate in the form of waves |