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sree.
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why unequal fringe width in Michelson interference pattern?
Well then I clearly did not understand you. You will have to provide more information about what you are talking about.sree. said:Dear Simon,
I don't think it is due to apparatus imperfection. There is a formula for fringe width which is given by β=λ/2nθ, where n is the order of the fringe. but none of the textbook has given the explanation for this.
The unequal fringe width in a Michelson interference pattern is caused by the difference in path length traveled by the two beams of light. This can be due to imperfections in the mirrors or other components of the interferometer, or due to variations in the refractive index of the air in the path of the light.
Yes, the unequal fringe width can be reduced by using high quality mirrors and other precise components in the interferometer. The air in the path of the light can also be controlled by using a vacuum or by adjusting the temperature and humidity of the environment.
In most cases, the unequal fringe width does not significantly affect the accuracy of the interferometer. However, it can cause errors in certain measurements, such as those involving small changes in the path length or wavelength of the light.
Yes, the unequal fringe width can be used to measure small changes in the refractive index of a medium, which can be useful in studying the properties of gases and liquids. It can also be used in interferometric sensors to detect small movements or vibrations.
No, the unequal fringe width is not a reliable method for determining the wavelength of light. This is because it is affected by various factors such as the quality of the mirrors and the environment, and it is not a precise measurement compared to other methods such as using a diffraction grating.