WHAT IS THE ELECTROMAGNETIC SPECTRUM: Is the complete range of electromagnetic waves placed in order of increasing frequency. The electromagnetic spectrum is made up of radio waves, infrared rays , visible light ,ultraviolet rays ,x-rays ,and gamma rays.

RADIO WAVES: Radio waves are the electromagnetic waves with the longest wavelengths and the lowest frequencies. They include broadcast waves ( for radio and television) and microwaves. The radio waves with the shortest wavelengths and the highest frequencies are microwaves.


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