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pratikaman
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what does it mean by localisation of fringes?
Localised fringes are interference patterns that are formed when two or more waves interact with each other. These fringes are only visible in a specific region, or localized area, and appear as bright and dark bands of light. They are created when the peaks and troughs of the waves overlap, resulting in constructive and destructive interference.
Non-localised fringes, also known as global fringes, are interference patterns that can be observed throughout a larger area. Unlike localised fringes, they are not limited to a specific region and can be seen even when the waves are not overlapping. This is because the waves are interacting over a larger distance, resulting in a more gradual change in intensity.
The formation of localised and non-localised fringes is affected by factors such as the wavelength, amplitude, and phase difference between the interfering waves. The distance between the sources and the medium through which the waves travel can also play a role in determining the type of fringes that are formed.
Localised and non-localised fringes are commonly used in scientific research to study the properties of waves and to measure small changes in distance or displacement. They are also used in fields such as optics, spectroscopy, and interferometry to analyze the behavior of light and other electromagnetic waves.
Yes, localised and non-localised fringes can be observed in everyday life. For example, oil slicks on water can create non-localised fringes due to the interference of light waves. Localised fringes can also be seen in soap bubbles, where the thin film of soap creates an interference pattern that appears as colorful bands of light.