DEFINITION OF ELECTROMAGNETIC WAVES

An electromagnetic wave is produced by the acceleration of the electric charge and propagated by the variation of the “electric and magnetic fields”. Electromagnetic radiation is composed of electromagnetic waves and is formed when an electric field comes in contact with the magnetic field. Electromagnetic waves help to determine the length and properties of the spectrum to maintain the frequency of the radiation. The electromagnetic wave amplitude determines the intensity of the magnetic and electric field quantities. The nature of the electromagnetic wave is transverse. Crest denotes the highest point in the wave and trough denotes the lowest point in the wave.

What are electromagnetic waves? 

Electromagnetic waves are defined as the combination of electromagnetic fields and help to determine the solution of the electrodynamics equation. Electromagnetic waves are produced due to the timely change in the electric and magnetic fields and depending on the periodic change power is generated in the field. The electromagnetic wave equation denotes the propagation of waves through a medium or in a vacuum. In a vacuum, the electromagnetic wave frequency is the same as the frequency of light. Further, when electromagnetic waves are propagated in a vacuum, the oscillation of the electric and magnetic fields are perpendicular to each other and create a transverse wave.

Production of electromagnetic waves

Electromagnetic waves are produced by a charged particle when the positive force is exerted from the electric charge particle in the contact of electromagnetic fields. Positive charges flow to the direction of the field and the negative changes flow to the opposite directions of the field. However, the magnetic field is produced by the moving particle when the force is exerted in the magnetic field by other particles. The magnetic force is always perpendicular to the direction of the velocity, therefore, in the magnetic field only velocity is changed but the direction is the same. Therefore, the electromagnetic wave is produced by the electric and magnetic field travelling through space at the speed of the light C.

Types of electromagnetic waves 

Electromagnetic waves range from their longest wavelength to the shortest wavelength. Different types of electromagnetic waves depend on the level of the frequency and speed of velocity. “UV light, radio waves, X-rays, infrared rays, gamma rays, microwaves” are the most common types of electromagnetic waves. The longest wavelength wave refers to the radio waves and the shortest wavelength refers to the gamma rays. Visible light is also a common electromagnetic wave that comes from the bulb in the house. Radio waves are very useful for interaction and communication including tv and radio. Microwaves are also very useful for cooking food and for satellite communication. 

Properties of electromagnetic waves

• Electromagnetic fields are generated by the oscillation of the electromagnetic field.
• Electric and magnetic fields are oscillating to the right angle in the direction of each electric and magnetic field.
• Electromagnetic waves are transverse and travel with the speed of light in a vacuum.
• The waves are not diverted by the electric and magnetic fields.
• The electromagnetic waves are propagated in parallel to the electric and magnetic fields.
• Electromagnetic waves can travel at the same speed of the light that is 300000000 m/s.
• The electromagnetic spectrum is divided into seven regions to decrease wavelength and increase the frequency of the energy.

Uses of electromagnetic waves

Electromagnetic waves are very useful in daily life and the properties of the wave have been used in communication and interaction through radio and television. Radio waves are very easy in the air, therefore used for communication in radio and television. Radio waves are generally produced by the oscillations and absorbed by the conductor to create an alternating current. Information is transferred by coding in the wave before the transmission and decoded in the receiver conductor. Microwaves are very useful for processing food and for satellite communication in the broadcasting network. 

Importance of electromagnetic waves

Visible light is the light that we use in daily life and the frequency of the light is generally used in the optical fibre communication process. Ultraviolet radiation is widely used in water purifiers and filters to kill bacteria and germs and make the water safe for drinking. UV radiation is extensively used in the medical world to treat the disease and diagnose the disease as early as possible. Electromagnetic waves are very useful for determining the bacterial count in the sample tested in the lab for medical purposes. It is also offering better advancement in this field.

Conclusion

The study indicates that Electromagnetic waves are very useful in daily life and it is quite effective in disease diagnosis and treatment. Electromagnetic waves can travel with the speed of life in a vacuum. The study illustrates that Electromagnetic waves are generally produced by the oscillation of the electromagnetic field and the frequency depends on the velocity of the field. The above study also indicates that electromagnetic waves are transverse in nature and propagated in the right angle.