How electromagnetic waves generated?

Answer 1

A wave is produced due to the disturbance of particles of a medium. Waves are produced when particles of a medium vibrates. Energy is transferred from one point to other point when a wave propagates. There are two types of waves including transverse waves and longitudinal waves. Transverse waves are those waves in which movement of particles is perpendicular to the propagation of wave. Those waves in which movement of particles or disturbance in particles is parallel to the propagation of waves, are called longitudinal waves. Moreover, electromagnetic waves do not require any medium for their production

Answer 2

Seismic waves are tremors or vibrations in the Earth's crust that are caused by the build up or accumulation of pressure (more correctly termed stress).

This accumulation of stress causes the rocks that make up the crust to deform elastically. This is very similar to what happens when you squash or stretch a spring and causes a form of energy to be stored in the rocks of the crust - technically described as elastic potential energy.

When this stress gets too large, it exceeds the strength of the rocks in the crust and causes a brittle failure. Brittle failures are failures where fractures form through the material.

Over time the lithosphere has been repeatedly fractured in this way and so is now heavily faulted. These faults are weaker than the intact rock mass around them so tend to act as the focus point for earthquakes as they tend to slip before the surrounding rock can fail.

This sudden brittle failure causes all of the elastic potential energy to be released at one time in the form of seismic waves, just as if a spring or elastic band that was being stretched suddenly snapped.

Answer 3

An electromagnetic wave can be created by accelerating charges; moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light.

Answer 4

Radio waves are generated by a disturbance of the electromagnetic field.

Lightning for example gives out a pulse of radio waves over a broad range of frequencies, because of the ionization of the air.

For communication & TV, an electronic oscillator is used to generate an electrical signal, and when fed to an antenna, this signal will generate radio waves. These particular radio waves are modulated to carry the information - speech - pictures etc.

Answer 5

EM waves can be generated in many ways, depending on the type of wave.

1) acceleration of a charged particle.

2) change in energy state of the electrons around an atom.

3) change in energy state of an atomic nucleus.

Answer 6

hay there a wave is formed by flopping some water

hay there a wave is formed by flopping some water

Answer 7

Tides are generated by the gravitational pull of the Moon and the Sun.

Waves are caused by movement of surface water, usually by the wind.

Answer 8

Wind