Notices by Kris\Slyka (slyka@pawb.fun)

@leeloo but… that's exactly what I did in the video? Wether or not the it's a CD-R or a normal CD makes no difference in the layer stackup :blobfoxconfused:

@leeloo I don't have anything to read CDs with anymore, but I doubt it. Even though there is some amount of error correction in CDs this basically completely covers a continuous section of the surface in relatively deep scratches

@leeloo it's still an interface between two materials with different refractive indexes, which due to the grooves ends up at pretty steep angles. That's gonna refract the light all over the place wether it's focused on the interface or not. I'd love to be proven wrong but I don't really see that working too well

ok, time to try out the ferric chloride + ferric sulfate + oxalic acid formula from yesterday on a glass plate and see if I can take a photo with it!

#Cyanotype

ok, all set up to test some more 1880s photo chemistry!

Gonna test all my variations on the ink print process to see what's going on with that

#Cyanotype #InkPrint

@MLE_online pick them both up, do some solar grinding

*extremely excites hyena noises*

the weird tube cameras keep multiplying! thank you so much to @Dtl for saving this thing from the scrap and sending it my way!

oh my god… it's got hinges!

it's gorgeous~

if anyone hasn't seen this project yet you should definitely check it out: An open source full frame CCD camera built from scratch around a Kodak sensor! Some incredibly impressive engineering going on there.

https://www.youtube.com/watch?v=8vsC6fZYmV4

so, I was talking to a friend about electrochromic paper, paper that changes color in response to electricity, after seeing some old fax machine and audio recorder patents that mentioned it.

They use potassium ferrocyanide mixed with potassium cyanide (yikes…) which turns paper black when electricity flows through it. I tried it with just potassium ferrocyanide and it kinda worked, but sucked.
But that got me thinking about prussian blue, the pigment created in blueprints/cyanotype. It can exist in two different oxidation states, one of them is colorless and the other is blue. Could you electrochemically reduce the blue pigment into the colorless version?

You can! As long as the paper is slightly damp you can rest it on top of a conductive surface (I used a piece of SMD stencil) connected to around 25-30V and run the ground lead over the paper which will leave a white line in the pigment! It doesn't seem to be reversible though, or at least I can't get any current to flow in the opposite direction…

just one more vidicon bro, I swear just one more vidicon bro, I swear just one more vidicon will fix me

god, aliexpress has some wild fucking lenses

you've heard of micro 4/3, now get ready for

finally, analogue CDs

wii shop theme remix by @miunau