Quick Answer: What is the electromagnetic spectrum and why is it important?

Discovered more than a century ago, the electromagnetic spectrum is the basis on which our universe operates. Without it we wouldn’t be able to see, stars wouldn’t shine, and life would not exist. It is one of the most important principles that governs everything around us.

Why is the electromagnetic spectrum important?

It is important because it furnishes information about the composition, the temperature and maybe the mass or relative velocity of the body that emits or absorbs it.

What is the most important part of the electromagnetic spectrum?

Infrared (IR) radiation – also referred to as thermal radiation – is the portion of the electromagnetic spectrum lying between visible light and microwaves. The most important natural source of infrared radiation is the sun.

What is the electromagnetic spectrum simple definition?

electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. … The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation.

How is the electromagnetic spectrum important to life on Earth?

Electromagnetic energy travels in waves and spans a broad spectrum from very long radio waves to very short gamma rays. The human eye can only detect only a small portion of this spectrum called visible light. … You depend on this energy every hour of every day. Without it, the world you know could not exist.

THIS IS INTERESTING:  Your question: How electromagnetic waves affect humans?

What is the most important use of electromagnetic waves?

Electromagnetic waves are used to transmit long/short/FM wavelength radio waves, and TV/telephone/wireless signals or energies. They are also responsible for transmitting energy in the form of microwaves, infrared radiation (IR), visible light (VIS), ultraviolet light (UV), X-rays, and gamma rays.

What is the most important example of waves?

Sound is the most important example of a mechanical wave. Sound waves cannot travel through a vacuum.

What is meant by electromagnetic spectrum give its four uses?

The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to Waves and Frequency. EM spectrum uses are: Communication, treat cancer, sterilize medical equipment, killing living organisms.

What are the main parts of the electromagnetic spectrum?

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

What are the benefits of electromagnetic radiation?

The killing and destructive power of electromagnetic radiation can be used constructively for curing the incurable diseases by eradicating the disease producing pathogens and micro organisms like bacteria, virus & fungi.