Electromagnetic radiation

Electromagnetic radiation is radiation which have both magnetic and electric properties.  Electromagnetic radiation occupied wide area of radiation that can be explained or group by frequency or it wavelength.

The distance between the two successive peaks is called wavelength (λ). Wavelength is measure in nanometer (nm).

While frequency (v) can be define as the number of successive peaks that pass through a given point in a second. Frequency is measure in Hertz (Hz).