What is the Principle of Linear Superposition ??
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The pressure disturbance that results is governed by the
principle of linear superposition, which states that the resultant
disturbance is the sum of the disturbances from the individual
waves. Light is also a wave, an electromagnetic wave, and it
too obeys the superposition principle. When two or more light
waves pass through a given point, their electric fields combine
according to the principle of linear superposition and produce a
resultant electric field. According to theory of electromagnetic
waves, the square of the electric field strength is proportional
to the intensity of the light, which, in turn, is related to i
brightness. Thus, interference can and does alter the brightness
of light, just as it affects the loudness of sound.
principle of linear superposition, which states that the resultant
disturbance is the sum of the disturbances from the individual
waves. Light is also a wave, an electromagnetic wave, and it
too obeys the superposition principle. When two or more light
waves pass through a given point, their electric fields combine
according to the principle of linear superposition and produce a
resultant electric field. According to theory of electromagnetic
waves, the square of the electric field strength is proportional
to the intensity of the light, which, in turn, is related to i
brightness. Thus, interference can and does alter the brightness
of light, just as it affects the loudness of sound.
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