The visible spectrum<span> is portion of the </span>electromagnetic spectrum<span> that is </span>visible <span>to the </span><span>human eye. </span>gamma rays, <span>sound waves, </span><span>microwaves are not the part of spectrum of light, whereas color is the portion of spectrum of light.</span>
The electromagnetic spectrum is a classification of all the types of electromagnetic waves. They are generally classified based on their wavelengths. In order of increasing wavelength, they are:
Gamma rays
X-rays
Ultraviolet
Visible light (colors)
Infrared
Microwaves
Radio waves
These types of waves are characterized by different properties. Not all of them are visible to human eye: in fact, only a small portion of the spectrum is visible to human eye, and this corresponds to the part called visible light, which includes all the colors from violet to red. The wavelengths of this part of the spectrum fall within the range 380 nm - 750 nm approximately.
