Young's Double Slit

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Fringe width β in YDSE is:

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In Young's Double Slit Experiment (YDSE), light from two coherent sources interferes to form a pattern on a screen.
- **Fringe Width ($\beta$)**: The separation between two consecutive bright (or dark) fringes.
$\beta = \frac{\lambda D}{d}$
where $\lambda$ is the wavelength, $D$ is the distance to the screen, and $d$ is the distance between the two slits.

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Young's Double Slit

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