The invention of the radio

123456789101112131415
Across
  1. 3. unit of measurement for radio wave frequency, named after the German physicist Heinrich Hertz
  2. 5. device that sends radio waves carrying information
  3. 8. radio waves with frequencies between 3 and 30 MHz, used for long-distance communication
  4. 10. device that transmits or receives radio waves
  5. 12. device that detects and converts radio waves into audio or visual signals
  6. 14. the measure of the strength or intensity of a radio wave
  7. 15. the device used in early radios to tune and select a specific radio frequency
Down
  1. 1. the number of radio wave cycles per second, measured in Hertz
  2. 2. the process of adding information to a radio wave to transmit audio or data
  3. 4. noise or interference caused by atmospheric conditions that affect radio signals
  4. 6. the emission of ionizing radiation from the nucleus of an atom
  5. 7. Serbian-American inventor who made significant contributions to radio technology
  6. 9. Italian inventor who transmitted the first radio signal across the Atlantic
  7. 11. the transmission of radio or television programs to the public
  8. 13. the medical specialty that uses ionizing radiation, ultrasound, and magnetic resonance to diagnose and treat disease