# Questions tagged [diffraction]

Diffraction is defined as the bending or flaring of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. This flaring is consistent with the spreading of wavelets in the Huygens construction. Diffraction occurs for waves of all types, not just light.

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### Why diffraction works at sharp edges?

While introducing Diffraction, physics textbooks say that this effect (Diffraction) is observed distinctively when the light is passed through a very small opening, the length or diameter of which is ...
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### Calculating net phase in single slit diffraction

I want to calculate the net phase at a point on the screen in Fresnel diffraction. Attached below is a rough diagram if needed. For this I considered hypothetical $n+1$ small slits acting as sources ...
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### Visualizing diffraction with Huygens' principle

I understand (both intuitively and mathematically) Huygens' principle -- that a wave front can be thought of as a sum of infinitely many spherical wavelets, which are each themselves a source of the ...
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### Minimum intensity fringes are not perfectly dark in diffraction pattern?

I am studying Interference and Diffraction and everywhere I look it is written that "In an interference pattern,the minima are usually perfectly dark while in a diffraction pattern they are not ...