Electromagnetic Spectrum


 
 
Concept Explanation
 

Electromagnetic Spectrum

 The entire range of frequencies of electromagnetic radiation that can be produced is called the electromagnetic spectrum. This ranges from low frequency radiation, such as radio waves, through high frequency gamma radiation. Like sound waves, as the frequency of the electromagnetic waves increases, the wavelength decreases.Electromagnetic waves all travel through empty space at the speed of light, which is approximately 300,000 km/s.

When an electromagnetic wave strikes a substance, it can either pass straight through it or be absorbed by the substance. When electromagnetic radiation is absorbed by a substance, this can cause the substance to heat up or change in some way. For example :- sunlight causes the sand on a beach to heat up whereas when sunlight hits a solar panel its energy is converted into an electric current.

 
 
 


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