Electromagnetic radiation, is a form of energy emitted by moving charged particles. As it travels through space it behaves like a wave, and has an oscillating electric field component and an oscillating magnetic field. These waves oscillate perpendicularly to and in phase with one another.
What causes electromagnetic waves to oscillate?
Electromagnetic radiation or electromagnetic waves are created due to periodic change of electric or magnetic field. … In homogeneous, isotropic media, the oscillations of the two fields are perpendicular to each other and perpendicular to the direction of energy and wave propagation, forming a transverse wave.
What is oscillating in electromagnetic waves?
Electromagnetic wave consists of oscillating electric and magnetic fields. Electric and magnetic fields oscillate perpendicular to each other and propagate in the direction perpendicular to both. Electric and magnetic fields can exist anywhere.
Why do particles oscillate?
In an oscillating system, the force always acts in a direction opposite to the displacement of the particle from the equilibrium point. This force can be constant, or it can vary with time or position, and is called a restoring force. As long as the force obeys the above principle, the resulting motion is oscillatory.
How does an oscillating electron generates an electromagnetic field?
The vibrating motion of the atoms causes the cloud of electrons to oscillate and this oscillation generates electromagnetic radiation. Since all electromagnetic radiation travels at the same velocity the frequency and wavelength of the generated radiation depends on the frequency of the oscillating electron cloud.
Why light is called electromagnetic wave?
The waves of energy are called electromagnetic (EM) because they have oscillating electric and magnetic fields. … All EM energy waves travel at the speed of light. No matter what their frequency or wavelength, they always move at the same speed.