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Who put microwaves out of order? They go between infrared and radio
It travels at the [[speed of light]]: about 186,300 [[mile]]s (300,000 kilometres) per second.
It travels at the [[speed of light]]: about 186,300 [[mile]]s (300,000 kilometres) per second.
EM radiation is a disturbance in an electric field, it consists of an energy particle called a "[[photon]]", a photon carries no electric charge and is massless, but since all energy is attracted by gravitation, light rays will bend near planets and stars.
EM radiation is a disturbance in an [[electric field]], it consists of an energy particle called a "[[photon]]", a photon carries no [[electric charge]] and is [[mass]]less, but since all energy is attracted by gravitation, light rays will bend near planets and stars.
Debate over whether light was a wave, or consists of particles was finally solved when [[quantum physics]] revealed all particles have wavelengths, but this is not generally noticeable in normal matter.
Debate over whether light was a wave, or consists of particles was finally solved when [[quantum physics]] revealed all particles have wavelengths, but this is not generally noticeable in normal matter.
The EM spectrum consists of the following types of photon radiation (in order of increasing wavelength): [[microwaves]], [[gamma ray]]s, [[x-ray]]s, [[ultraviolet light]], [[visible light]], [[infrared light]] and [[radio waves]].
The EM spectrum consists of the following types of photon radiation (in order of increasing wavelength): [[gamma ray]]s, [[x-ray]]s, [[ultraviolet light]], [[visible light]], [[infrared light]], [[microwaves]] and [[radio waves]].
The [[Michelson-Morley experiment]] proved that the speed of light (and everything else that is massless) will always be measured by an observer to be the same, in every frame of reference, no matter how fast the source or the observer are moving, this gives rise to the [[theory of relativity]].
The [[Michelson-Morley experiment]] proved that the speed of light (and everything else that is massless) will always be measured by an observer to be the same, in every frame of reference, no matter how fast the source or the observer are moving, this gives rise to the [[theory of relativity]].