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Learn how to calculate the fringe width and position of bright and dark fringes in Young's double slit experiment using monochromatic light. Find the expressions for fringe width, angular width, and fringe shift in different cases and examples.
The fringe width is the distance between two successive bright or dark fringes. The distance between two fringes can be calculated by β = λD d where, β represents fringe width, λ represents wavelength, D represents distance between slit and screen, and d represents the distance between two slits.
Jun 25, 2021 · Fringe width is the distance between two consecutive bright spots (maximas, where constructive interference take place) or two consecutive dark spots (minimas, where destructive...
- 12 min
- 59.8K
- Khan Academy India - English
Fringe width is the distance between two consecutive bright spots (maximas, where constructive interference take place) or two consecutive dark spots (minimas, where destructive interference take place).
- 12 min
- Mahesh Shenoy
Learn about the bending of light around corners when it passes through a small opening, called single slit diffraction. Find out the formula for the position and width of the fringes, and watch a video on the experiment.
- 2 min
- The phase difference is defined as the difference between any two waves or the particles having the same frequency and starting from the same point...
- The condition for constructive interference is that the path difference should be equal to an integral multiple of the wavelength.
- The condition for destructive interference is that the path difference should be equal to an odd integral multiple of half wavelength.
- Temporal coherence is known as the correlation between the field at a point and the field at the same point at a later time.
- Compton effect is defined as the effect that is observed when x-rays or gamma rays are scattered on a material with an increase in wavelength.
- Total internal reflection is defined as the complete reflection of light rays within the same medium when passing from an optically denser medium t...
Fringe width is directly proportional to wavelength and inversely proportional to refractive index. The formula is given by, In air, Fringe width, x =. In medium, Fringe width, x = Dλ μd. where, d is the distance between the slits and, D is the distance between the screen and the slit.
Sep 12, 2022 · The diffraction pattern of two slits of width \(a\) that are separated by a distance d is the interference pattern of two point sources separated by d multiplied by the diffraction pattern of a slit of width \(a\). In other words, the locations of the interference fringes are given by the equation \[d \, \sin \, \theta = m \lambda \nonumber \]
