Diffraction through a transparent aperture?

In summary, the conversation was about diffraction through a transparent slit and the question of what happens at the edges of the slit. The person asking the question was curious about the diffraction pattern and whether it would be affected by the use of a transparent material for the slit instead of an opaque one. They were not concerned about the specific pattern, but were seeking thoughts on what might happen at the edges.
  • #1
Gobil
59
0
hi All,

I got to thinking recently about diffraction; through an opaque slit for example, causes a normal diffraction pattern which is well described in texts. However, what happens when you have slit transparent to the light which is going through it. Obviously, the light passes through the solid part of the slit is just transmitted, and the lights through the middle of the slit is transmitted. But at the edges of the slit what happens? it causes diffraction also does it not? what is going on at the edge?

any thoughts welcome

gobil
 
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  • #2
I'm having trouble understanding your question- are you perhaps referring to diffraction from a phase aperture rather than an amplitude aperture?
 
  • #3
Andy Resnick said:
I'm having trouble understanding your question- are you perhaps referring to diffraction from a phase aperture rather than an amplitude aperture?

I guess so. The scenario is as follows, you have an opaque slit normally like metal, for example, to use in a spectrometer. then you just replace this slit with glass, which is transparent to the light in question. what happens at the edges? I´m not so concerned obout what kind of pattern you get, I´m just not sure what will happen at the edges.

Thanks!
 

FAQ: Diffraction through a transparent aperture?

What is diffraction through a transparent aperture?

Diffraction through a transparent aperture refers to the bending and spreading of light waves as they pass through a small opening or aperture in a material that allows light to pass through. This phenomenon is a result of the wave nature of light, where the light waves interact with the edges of the aperture and spread out into a diffraction pattern.

How does the size of the aperture affect diffraction?

The size of the aperture directly affects the amount of diffraction that occurs. A smaller aperture will result in a more pronounced diffraction pattern, as the light waves are forced to bend and spread out more due to the limited space. Conversely, a larger aperture will result in a less noticeable diffraction pattern.

What is the relationship between the wavelength of light and diffraction through a transparent aperture?

The wavelength of light also plays a role in diffraction through a transparent aperture. As the wavelength decreases, the amount of diffraction increases. This means that light with a shorter wavelength, such as blue or violet light, will exhibit a more pronounced diffraction pattern compared to light with a longer wavelength, such as red or orange light.

Can diffraction through a transparent aperture be observed in everyday life?

Yes, diffraction through a transparent aperture can be observed in various everyday situations. For example, when light passes through a small opening in a window blind, or when light filters through the branches of a tree, you can see a diffraction pattern on the ground or walls. This phenomenon is also used in various optical devices, such as microscopes and telescopes.

How does the distance between the aperture and the screen affect diffraction?

The distance between the aperture and the screen also affects diffraction. As the distance increases, the diffraction pattern becomes more spread out and less defined. This is because the light waves have more space to spread out and interfere with each other, resulting in a less pronounced pattern. Conversely, a shorter distance between the aperture and the screen will result in a more defined and concentrated diffraction pattern.

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