What Happens When Multiple Slits Are Used for Diffraction?

In summary, the conversation discusses Fraunhofer diffraction and its expression for a single slit. It then raises questions about what would happen with a double slit or multiple slits, as well as with an obstacle in the path of the light. The conversation also refers to two sources for further information on the topic.
  • #1
carlosbgois
68
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Hi there. It's not actually a problem, I was just trying to figure it out, so idk if this is the right section for this post, but anyways: I've managed to derive the expression for the Fraunhofer diffraction in a single slit, such that the distance between a minimum and the central point is given (in an approximation) by [itex]y=\frac{mλD}{a}, m=1, 2, 3, ...[/itex], in which D is the distance from the slit to the screen, and a is the slit gap.

What would happen in the same arrangement, but with a double slit? And with multiple slits? And what if, instead of a slit, I had an obstacle, such that the light would (classicaly) go through the sides, but not over the object?

Many thanks
 
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FAQ: What Happens When Multiple Slits Are Used for Diffraction?

What is multiple slit diffraction?

Multiple slit diffraction is a phenomenon that occurs when a wave, such as light or sound, passes through a series of narrow, closely-spaced slits or openings. The resulting interference pattern creates a series of bright and dark bands on a screen or detector.

How does multiple slit diffraction occur?

Multiple slit diffraction occurs due to the wave nature of light or sound. When a wave passes through a narrow opening, it spreads out and creates a diffraction pattern. When multiple slits are placed close together, the diffracted waves interfere with each other, resulting in a complex interference pattern.

What factors affect the diffraction pattern in multiple slit diffraction?

The factors that affect the diffraction pattern in multiple slit diffraction include the distance between the slits, the wavelength of the wave, and the size of the slits. The angle at which the waves pass through the slits also plays a role in the resulting pattern.

What are some real-world applications of multiple slit diffraction?

Multiple slit diffraction has various applications in different fields, such as optics, acoustics, and radio waves. In optics, it is used in the design of optical instruments like cameras and telescopes. In acoustics, it is used to study the properties of sound waves and in the design of musical instruments. In radio waves, it is used to improve the resolution of radio telescopes.

How is multiple slit diffraction different from single slit diffraction?

Multiple slit diffraction differs from single slit diffraction in that it involves multiple slits instead of just one. This results in a more complex interference pattern with multiple peaks and valleys, unlike the simple single peak pattern of single slit diffraction. Additionally, the intensity of the diffraction pattern in multiple slit diffraction is much higher than in single slit diffraction.

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