Recent content by Johnny Davens

  1. J

    Rebuild Diffraction Grating From Fourier Frequency Components

    I have a diffraction grating through which I shined a 532 nm laser. A detector which can pan 360˚ was rotated around and picked up all of the transmitted diffraction peaks. Shown in the graph graph attached are the intensities of the peaks against the angle. My question is, is it possible to...
  2. J

    What are the expectations for authorship when using a forum for research help?

    That's what I was assuming. I was just asking in case the help goes further than that of just helping with the maths, as I'm not sure how simple what I'm working on is at the moment. It's not that the message itself would be cited, it's whether the author would be named on the publication.
  3. J

    What are the expectations for authorship when using a forum for research help?

    Hi there, I'm a first year PhD student and was going to ask the forum for some advice on some maths (specifically Fourier) that will be used in my work. However, I wanted to know what the forum/general policy is on what happens should this work ever be published. Would a forum contributor be...
  4. J

    Beautiful Natural Oceanic Diffraction Patterns

    Both of those 'double slit' waves are very cool. I guess it's going to be quite hard to find one that exhibits a perfect pattern due to the slight lack of coherency in this kind of wave!
  5. J

    Beautiful Natural Oceanic Diffraction Patterns

    Simon, did you just get the picture yourself and call if diff.jpg?
  6. J

    Beautiful Natural Oceanic Diffraction Patterns

    That's the one.
  7. J

    Beautiful Natural Oceanic Diffraction Patterns

    Hi, I was having a flick around Google maps whilst procrastinating and came across this when I looked at some islands off the Australian coast. I'm not 100% certain that the pattern is caused by diffraction of the waves passing through the gap between Bernier and Dorre Islands, or simply...
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