Its arbitrary and differs by country, (and by usage)
but .5 megacycles to 1000 megacycles is about right.
Radio Waves.
by changing the amplitude or frequency of the radio waves.
Radio waves are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum.
The frequency range that the radio waves can penetrate the human body is between 1Hz and 10 KHz. This frequency of the radio waves is however not dangerous.
by changing the amplitude or frequency of the radio waves.
by changing the amplitude or frequency of the radio waves.
Gamma rays have the highest frequency among gamma rays, infrared waves, and radio waves.
Radio waves have the lowest frequency on the electromagnetic spectrum. They have the longest wavelength, which corresponds to a lower frequency.
frequency
FM radio has the higher frequency which is why it sounds better. AM is a lower frequency but can travel further because the waves bounce off
Radio waves have the lowest frequency among the electromagnetic waves. They have frequencies ranging from 3 kHz to 300 GHz.
by changing the amplitude or frequency of the radio waves.