Interference and Diffraction Combined

[lha08]

Homework Statement

Can anyone explain to me how exactly this works because i thought that interference is supposed to oscillate up and down at the same height but in the "interference and diffraction combined" pattern, it's no longer the case...And also, I'm not sure but in the "interference and diffraction combined pattern", which is the diffracted and interference pattern (which is the one inside and outside)?
Thanks.

Homework Equations

The Attempt at a Solution

 

[jbsteele]

Interference and diffraction are both wave phenomena and can be combined to produce an interference-diffraction pattern. In this type of pattern, the interference and diffraction effects result in a pattern of alternating light and dark bands that are radially symmetric around the point of observation. The light and dark bands correspond to waves that are in phase (constructive interference) and out of phase (destructive interference). The diffracted waves result in a more diffuse pattern outside of the central interference pattern, while the interference pattern is more pronounced within the circle.

 

[nlightner]

Interference and diffraction are both phenomena that occur when waves interact with each other or with obstacles. Interference refers to the superposition of two or more waves, resulting in either constructive or destructive interference. On the other hand, diffraction is the bending of waves as they pass through an opening or around an obstacle.

When these two phenomena are combined, the resulting pattern is a combination of both interference and diffraction effects. This can create complex patterns that may not be easily explained by just one of these phenomena alone.

In terms of the specific question about the height of the interference pattern, it is important to note that interference patterns can vary in height depending on the specific circumstances of the experiment. In some cases, the interference pattern may appear to oscillate at the same height, while in others it may not. This is due to factors such as the wavelength of the waves, the distance between the sources, and the angle of observation.

As for which pattern is the diffracted and which is the interference pattern in the "interference and diffraction combined" pattern, it is not always easy to distinguish between the two. Both phenomena are occurring simultaneously and can influence each other, resulting in a complex pattern. It is best to consult a diagram or experiment setup to determine which specific parts of the pattern are due to diffraction and which are due to interference.

In summary, the combination of interference and diffraction can create complex patterns that may not be easily explained by just one of these phenomena alone. It is important to consider all factors and consult diagrams or experiment setups to fully understand the patterns observed.