The electromagnetic spectrum is a range of frequencies, wavelengths, and photon energies that includes wavelengths that range from a few kilometers to a small portion of the size of an atomic nucleus in the spectrum of electromagnetic waves. Frequencies in this range from below 1 hertz to above 1025 Hz. In a vacuum, electromagnetic waves typically move at speeds close to those of light. They operate at a variety of wavelengths, frequencies, and photon intensities, though.
The electromagnetic spectrum is made up of a range of all electromagnetic radiation and a number of subranges, or "portions," that fall within that range. These can also be categorised as ultraviolet, visible, or infrared radiation.
Arrange the rays in the electromagnetic spectrum according to the increasing order of wavelength. (1) Infrared rays, (2) X rays, (3) Radiowaves, (4) Microwaves, (5) Gamma rays, (6) UV rays.
According to the increasing order of wavelength, the electromagnetic spectrum's rays are 5-2-6-1-4-3. The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.