anfractuosity
Joined 17 years ago
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Recent submissions
Comment · 1 day ago
I used the same approach to play music from a .wav via pulse density modulation -
Comment · 2 months ago
Kind of related but using a different approach - https://www.youtube.com/watch?v=qtQ4rK66vlE ('This microscope uses touch')
Also see https://hira.hope.ac.uk/id/eprint/2869/1/Paper2_LowCostGelsi... for a DIY version.
Comment · 3 months ago
Wouldn't line pairs / mm count as resolution.
Comment · 3 months ago
Isn't the depth of field primarily determined by the aperture of the lens and focal length.
Comment · 3 months ago
Really like Darktable, was playing printing a few photos at weekend from it, on my large-ish dye-sub printer - DNP DS80, works very nicely under Linux with cups (once I figured out how to make it print in colour).
I switched to it from Lightroom and made a little Python script to copy photos based on their exif data, into the same file structure as Lightroom.
Comment · 3 months ago
Doesn't arch already package it (https://archlinux.org/packages/extra/x86_64/darktable/), I was using darktable on arch, but recently switched distros.
Comment · 5 months ago
There's a process some brewers use to treat water, to make it similar to a well in England, called burtonisation, using various salts
Comment · 5 months ago
Maybe astronauts on the ISS could try a similar experiment ;)
Comment · 6 months ago
Yeah, it's very cool, I found a rather interesting document on the chemistry to create a lippmann plate 'The True Colour of Photography' by 'Hans I. Bjelkhagen, Darran P.M. Green' seems their exposure times where in the order of minutes.
Comment · 6 months ago
Sounds very interesting. Just started looking at the paper, which seems very complex to me "An alternative approach utilizes light absorption via
localized surface plasmon resonances (LSPRs) of noble metal nanoparticles (NPs)".
I came across https://www.nano-resonance.com/ which appears to be the promotional page for the technique, it has a nice diagram which appears to show how the size of the silicon nanoparticle enhances certain wavelengths of light.
Very cool how they can use an inkjet printer for their approach.
Also see https://en.wikipedia.org/wiki/Lippmann_plate for a photographic process that creates colours using diffraction patterns.
https://www.youtube.com/watch?v=-DyrBDsKA5s is a fun video on lippmann plates.
Comment · 6 months ago
That sounds really cool, how did they do the DNA testing out of interest?
Comment · 7 months ago
https://dberard.com/home-built-stm/ shows individual atoms.
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