- #1
Jimmy87
- 686
- 17
I have found lots of forum threads on this but I still can't see the connection between wavelength and diffraction. Here is a picture I found:
If you increase the wavelength then all is this will do is just increase the time between the crests that arrive and I don't see how that can have anything to do with the diffraction effect. Another example is when you go inside a faraday cage you can block radiowave signals coming in/out but you can still see the person. This is explained by the fact that the radiowave has a wavelength similar to the spacing of the gaps in the Faraday cage whereas the light wavelength is much smaller but I don't see how increasing the distance between crests can do anything to the diffraction as the length of the wavefront (as seen in the diagram above) doesn't change. Could somebody please help explain.
Thanks
If you increase the wavelength then all is this will do is just increase the time between the crests that arrive and I don't see how that can have anything to do with the diffraction effect. Another example is when you go inside a faraday cage you can block radiowave signals coming in/out but you can still see the person. This is explained by the fact that the radiowave has a wavelength similar to the spacing of the gaps in the Faraday cage whereas the light wavelength is much smaller but I don't see how increasing the distance between crests can do anything to the diffraction as the length of the wavefront (as seen in the diagram above) doesn't change. Could somebody please help explain.
Thanks