The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays .
Read moreWho gave electromagnetic wave theory?
About 150 years ago, James Clerk Maxwell , an English scientist, developed a scientific theory to explain electromagnetic waves. He noticed that electrical fields and magnetic fields can couple together to form electromagnetic waves.
Read moreWhat is Maxwell’s electromagnetic wave theory?
In his formulation of electromagnetism, Maxwell described light as a propagating wave of electric and magnetic fields . More generally, he predicted the existence of electromagnetic radiation: coupled electric and magnetic fields traveling as waves at a speed equal to the known speed of light.
Read moreWhat are the characteristics of electromagnetic wave theory?
The inherent characteristic of an electromagnetic wave is its frequency . Their frequencies remain unchanged but its wavelength changes when the wave travels from one medium to another. Electromagnetic wave follows the principle of superposition.
Read moreWhat are the 7 types of electromagnetic waves in order of increasing frequency?
EM radiation is classified into types according to the frequency of the wave: these types include, in order of increasing frequency, radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays .
Read moreDo electromagnetic waves have different frequency?
Electromagnetic waves vary in wavelength and frequency . Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies. Higher frequency waves have more energy. The speed of a wave is a product of its wavelength and frequency.
Read moreHow electromagnetic waves are generated?
Electromagnetic waves are formed when an electric field (which is shown in blue arrows) couples with a magnetic field (which is shown in red arrows). Magnetic and electric fields of an electromagnetic wave are perpendicular to each other and to the direction of the wave.
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