The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation.
The complete range of wavelengths, considered as a continuum, of all kinds of electromagnetic radiation. The spectrum ranges from: gamma rays, with wavelengths smaller than the size of an atom; to long waves, emitted from cold matter in outer space, which can have a wavelength of more than 1 million kilometres.
The spectrum ranges from: gamma rays, with wavelengths smaller than the size of an atom; to long waves, emitted from cold matter in outer space, which can have a wavelength of more than 1 million kilometres.