The Daily Post Weekly Photo Challenge is Lines.
The photo shows two overlapping fingerprints in sodium thiosulfate which has crystallized. The crystals were photographed through a microscope using polarized light.
Sodium thiosulfate is used as a photographic fixer in the darkroom as silver halide dissolves in it. Commonly known as Hypo in the days of the black and white darkroom.
Very cool image.
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Thanks Graham.
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Really awesome way of treating finger prints. I love the electrifying neon colors – psychedelic colors👍😃
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Thanks
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Beautiful…is there a quick explanation of your set up for shooting this?
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Maybe I should write a future post about polarized light microscopy.
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I’m curious. Was this part of your job? Where you researching something or reporting on it or just curious?
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At the time I was running the photo department at a scientific research establishment but these were taken in my spare time. I was interested in the technique as it wasn’t a process I used in the job.
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Ah…OK..I thought it might be something like this. I remember back in school when all these amazing, otherworldly microscopic shots started coming out in different press sources. You were part of that wave?
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I may have been, these were taken in the early 1980s.
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Aaaand if you post about it, you will likely have to post a link somewhere in one of my comment sections because I do not get around to the blog as much as I’d like to and I am curious. I assume you are an engineer and jerry-rigged something.
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I finally got around to finishing it,
https://davidmsphotoblog.com/2018/05/12/polarized-light-photomicroscopy/
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