What is Electromagnetic Spectrum? Explained


In addition to the ray we see with our eyes, there are many rays in the universe that are not visible to the naked eye. To study all those rays, based on their differences in frequency and wavelength, a scientific scale system called electromagnetic spectrum (EMS) has been created. (adsbygoogle = window.adsbygoogle || []).push({});

If you do not know what the electromagnetic spectrum is, this article is for you. Today, I am going to unlock the details of the electromagnetic spectrum. In this article, you will know -

1. What is Electromagnetic Spectrum?

 a) Radio waves
 b) Microwaves

 c) Infrared rays
 d) Visible light

 e) Ultraviolet rays
 f) X-rays
 g) Gamma rays

What is Electromagnetic Spectrum?

Usually, the human eye sees only visible lights that come from the lamp and seen in rainbow such as Violet, Indigo, Blue, Green, Yellow, Orange & red light. But there are also some lights around us or from space that are not visible to the human eyes, such as Radio waves, Microwaves, Infrared rays, Ultraviolet rays, X-rays , Gamma rays. These are all kinds of electromagnetic radiation.

All these electromagnetic radiations are plotted according to the intensity of light at different frequency range or distribution of wavelength and frequency. This range of all types of EM radiation is called the electromagnetic spectrum .

Radio waves:

Radio waves are a type of electromagnetic radiation that is best-known for their use in communication technologies, such as television, mobile phones, and radios. These types of waves are also emitted by astronomical objects ( such as stars, gases, etc ) in space and recorded by scientists through telescopes.

If we talk about the wavelength of Radio waves then radio waves have the longest wavelengths in the electromagnetic spectrum.  Yes, radio waves have wavelength range from the length of a football to larger than our planet. (adsbygoogle = window.adsbygoogle || []).push({});

Radio waves have wavelengths ranging from 1 millimeter (mm) to 10,000 kilometers (km)s. At 1 millimeter (mm), the corresponding frequency is approximately 300 gigahertz (GHz), and at wavelength 10,000 kilometer (km) the corresponding frequency is approximately 30 hertz (Hz).


Microwaves are a type of electromagnetic radiation that is best known for its use in cooking food in microwave ovens. Also, microwaves have a range of applications, including spacecraft communications, radar, satellite,  radio astronomy, particle accelerators, spectroscopy, industrial heating, etc. Astronomers used these waves to learn about the structure of nearby galaxies.

If we talk about the wavelength of microwaves, then it has wavelengths ranging from 1 millimeter...

Top Tech News