Electromagnetic Spectrum of Radiation
Electromagnetic Spectrum
The Electromagnetic Spectrum is the range of frequencies stemming from all possible Electromagnetic Radiation sources. The spectrum is in theory infinite, the shortest wavelengths being on the molecular level and the longest wavelength being the universe itself.
Only a small amount of the electromagnetic spectrum is visible in the form of light and too small to see with the naked eye. A good natural example of how energy is transmitted can be seen as waves in the ocean ocean. Light waves work in the same manner just on much smaller wavelengths.
The Diagram below shows the Electromagnetic Spectrum. You can see that the visible spectrum (Rainbow Colours) is only a small part of the overall Spectrum.
Electromagnetic Spectroscopy
Spectroscopy is the study of the interaction between radiation and matter as a function of wavelength. In the past spectroscopy referred to the use of visible light and its dispersion according to its wavelength, e.g. by a triangular prism. The study of Electromagnetic spectroscopy has enabled scientists to calculate the wavelengths on the Electromagnetic Spectrum.
