The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated. when in the water, what happens to the interference fringes?

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11-08-2022
Physics

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The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated. when in the water, what happens to the interference fringes?

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tripatsingh039 tripatsingh039 · Answer 1 · 2022-08-20T20:33:50+02:00

The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated. Interference fringes are more closely spaced than in air by a factor of 1.33.

The double-slit experiment is a proof in modern physics that light and matter can exhibit properties of both classically defined waves and particles. It also shows that quantum mechanical phenomena are fundamentally probabilistic.

The influence on fringe width will be less pronounced if the Young's double-slit device is submerged in water. Light has a shorter wavelength in water than it does in air. As a result, the fringe will be narrower. λD/d is the formula for fringe width. Therefore, as the wavelength of light lowers in water, the fringe width also does.

Therefore, interference fringes are more closely spaced than in air by a factor of 1.33.

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