Property of electromagnetic waves

What are Electromagnetic Waves?

     Electromagnetic waves are also referred to as EM waves. EM waves are waves that are created due to vibrations between an electric field and a magnetic field. In different phrases, EM waves are composed of oscillating magnetic and electric fields.Electromagnetic waves are formed when an electric field comes in contact with a magnetic field. They are hence known as ‘electromagnetic’ waves. The electric field and magnetic field of an EM waves are normal to each other.

Property of Electromagnetic waves

1. Electromagnetic waves are propagated by oscillating electric and magnetic field oscillation at right angles to each other.            
2. They are transverse in nature.                            
3. They are not reflected by electric and magnetic fields.                                                           
4. They travel at the speed of 3 x 10⁸ ms-¹ at the vaccum.              

Applications of Electromagnetic Waves 

1. Electromagnetic radiations can transmit energy in vacuum or using no medium at all.                                                                             
2. EM waves play an vital function in conversation generation.                                     
3. Electromagnetic waves are used in RADARS.                                                                  
4. UV rays are used to stumble on forged financial institution notes. Actual financial institution notes don’t flip fluorescent beneath the UV mild.                                           
5. IR  is used for night vision and is used in security camera.

Graphical Representation of Electromagnetic Waves

Image source:Wikimedia

     Electromagnetic waves are shown by a sinusoidal graph. It consists of time-various electric and magnetic fields that are perpendicular to each different and are also perpendicular to the path of propagation of waves. Electromagnetic waves are transverse in nature. the best point of the wave is known as crest while the lowest point is referred to as a trough. In vacuum, the waves journey at a constant pace of 3 x 10^8 m.s-1

How are Electromagnetic waves formed?

• Normally, an electric area is produced by way of a charged particle. A pressure is exerted through this electric powered subject on other charged particles. high-quality charges boost up in the path of the field and poor prices boost up in a route opposite to the direction of the field.

• The Magnetic area is produced by means of a shifting charged particle. A force is exerted with the aid of this magnetic area on other moving debris. The force on those charges is usually perpendicular to the route in their velocity and consequently most effective adjustments the course of the speed, not the speed.

• So, the electromagnetic subject is produced by means of an accelerating charged particle. Electromagnetic waves are not anything however electric powered and magnetic fields travelling thru loose space with the speed of light c. An accelerating charged particle is whilst the charged particle oscillates approximately an equilibrium role. If the frequency of oscillation of the charged particle is f, then it produces an electromagnetic wave with frequency f. The wavelength λ of this wave is given by λ = c/f. Electromagnetic waves transfer electricity via area.

Tags:

Physics

• Facebook
• Twitter
• Whatsapp

• Newer

• Older