Electromagnetic Spectrum
The electromagnetic spectrum is the infinite range of frequencies of electromagnetic radiation, but what does frequency have to do with electromagnetic radiation? Well, electromagnetic radiation travels in waves and frequency [tex]f[/tex] tells us how many cycles per second it has a particular wave. Another important term is wavelength [tex]\lambda[/tex] that measures the distance from one crest to the next in a wave. Although you can find waves having different frequency and wavelength, in vacuum, however, there is a relationship for all of them:
[tex]c=\lambda f[/tex]
Where:
[tex]c[/tex] is the speed of light
[tex]\lambda[/tex] is the wavelength
[tex]f[/tex] is the frequency
But what are those waves? Radio, Microwave, Infrared, Ultraviolet, X rays, Gamma rays and even visible light are part of the electromagnetic spectrum.
