EMS consist of a range of the spectrum that is emitted from the sun in various forms that reach the human eye.
Some day to day spectrums are
Radio
Microwave
Infrared
Visible
Ultraviolet
X-ray
Gamma-ray
Visible light is a combination of primary colors like the blue, green and red that reach the eyes of the observer from a distance from 380 to 740 nanometers.
Having a larger wavelength that passes through the depths of the atmosphere and reaches the optics through the scattering a well as medium and longer wavelength. The longest wavelength in visible light is red and the shortest wavelength is of violet.