Question

What are the longest and shortest visible electromagnetic waves that humans experience?

Answer 1

Electromagnetic waves can be defined as the waves which are created as a result of the vibrations which are between an electric field and the magnetic field. In simple words, it is composed of the oscillating magnetic and the electric fields.

Complete answer:
The electromagnetic spectrum comprises from the longest to the shortest wavelength, radio waves, microwaves, optical, ultraviolet, infrared, x-rays and gamma-rays. The electromagnetic spectrum classification is done on the basis of the wavelength or the frequency. In order from the shortest to the longest wavelength, it has –
-Gamma rays
-X rays
-Ultraviolet rays
-Visible light
-Infrared
-Microwaves
-Radio Waves

Actually, humans are considered blind but not literally because the visible spectrum which is considered so small for us to see and therefore, we do not have the ability to see UV light, X-rays, Gamma rays and many other rays too. Visible light region of the electromagnetic spectrum consists of the infrared to the ultraviolet rays. First, human eyes observe the longer wavelength which has the less energy and vice-versa, that is the shorter the wavelength the higher the energy level.

Therefore, the longest wavelength the humans can see is red and the shortest wavelength the humans can observe is violet.

Note: Remember the difference between the lower frequency and the shorter wavelength. Lower frequency includes the radio waves, microwaves and infrared waves compared to the visible light. Also, shorter wavelength includes the ultraviolet, x-rays and gamma rays shorter compared to the wavelength than the visible light.