hii guys what is EM waves.......
Answers
Definition of electromagnetic wave. : one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
While it sounds somewhat psychedelic, an electromagnetic wave (EMW) is, in the workings of physics, defined as a wave produced by the interaction of time-alternating electric and magnetic fields.
Both electricity (your hair sticking straight up) and magnetism (a refrigerator magnet) can be static. However, when the two change or come together, they form a specific type of wave known as an electromagnetic wave.
Electromagnetic waves form when an electric field merges with a magnetic field. In directional form, magnetic and electric fields of an electromagnetic wave are perpendicular to one another and to the direction of the wave.
Commonly found examples of electromagnetic waves include: light, microwaves, x-rays, and TV and radio transmissions. All of these forms possess a similar, wave-like disturbance that systematically repeats itself over a distance known as a wavelength.