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Public Lab Research note

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Microscopic View of Public Lab's Acetate film slits

by dhaffnersr |

I have wanted to do this for awhile now, and finally got around to it and I am glad I did, I took my microscope today and examined the 0.09mm slit (one of 4 that comes with the Plab kit you can order, for various slit widths,) as I had suspected there are many imperfections riddled throughout the slit entrance area.


I'm not sure if these imperfections really pose any real attenuation of signal exiting the slit or distortion effects, but I am going to try an open air slit design of the same size and see if there is any difference.

Any comments or questions are welcomed.

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This is pretty interesting, thanks Dave! I'm curious to see the results, but how will you measure the relative attenuation?

@warren, hey jeff, I'm working on an experiment that will clearly show if there is any difference between the two.

@warren, hey jeff here is the experiment I ran that does show there is a difference between the acetate film strips Plab sells and the open-air slit I constructed the other day, here is the link to the research note,


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