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kogens

24 karma · joined April 17, 2019

nikolaj at longcreek.me
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kogens··on GameBoy on E-Paper ESP32 at 30FPS [video]
Great readability in direct sunlight without needing to compensate with a powerful front/backlight is one good argument.

Reading a book on e-paper in daylight is so much nicer than on a phone, for example.

kogens··on The Internet Archive currently down due to power outage
Few details given, 8 hours ago as of writing: https://bsky.app/profile/archive.org/post/3mtaa7o5pfc2k
kogens··on The April Fools joke that might have got me fired
Still in use in many places for some ungodly reason.

At my previous job they had been using Notes since the company was founded in the early 90’s, meaning they lived through it being Lotus Notes, then IBM Notes and now HCL Notes.

Everything was deeply entrenched - email, warehouse inventory, ERP system, all documentation made in the entire company… just everything.

And this is for a scandinavian company manufacturing high tech devices for telecom and aviation, among other things.

It was… an interesting nightmare, constantly got in the way of any sort of productivity. Definitely contributed to me leaving early

kogens··on See the submissions you have flagged (maybe accidentally)
And hidden https://news.ycombinator.com/hidden

(I literally just accidentally pressed hide on a post and was wondering how to un-hide it when I saw this post, nice coincidence!)

kogens··on Does anybody know this fractal? (2012)
Yeah, I immediately thought of Kikuchi lines from electron diffraction in crystals https://en.wikipedia.org/wiki/Kikuchi_lines_(physics)
kogens··on New scanning electron microscope tech sees magnetic field with 100nm resolution
Very cool!

There are also techniques for the TEM (transmission electron microscope) to visualize and measure magnetic fields such as electron holography.

Esentially by splitting the electron beam in two, passing half through vacuum and half through a magnetic sample, then recombining the beams, you can extract magnetic information from the interference pattern of the two beams with some Fourier analysis magic.

I have a writeup with examples from a project i did years ago on my blog, if anyone is interested: https://longcreek.me/blog/2021/holography-intro

Walkthrough of calculations using Python: https://longcreek.me/blog/2021/holography-code

kogens··on Linear Is Down
A project management tool/kanban board app. Similar to Trello, except Linear is way nicer to work with in my opinion.
kogens··on Scientists prefer studying pretty plants to dull ones
Scientists also tend to study what they can get funding for, which is often easier for more beautiful or easily explainable subjects.
kogens··on Excess protein enabled dog domestication during severe Ice Age winters
It's an interesting take, but wouldn't it be more favourable for the humans to simply dry the meat and save it, e.g. for summer where there are enough other food sources to mix it and avoid the protein overconsumption?

Cold, dry areas are ideal for drying meats, like they do with Norwegian stockfish https://en.wikipedia.org/wiki/Stockfish

kogens··on Colorized and upscaled footage of a snowball fight filmed in 1896
To me it seems like there has been a much larger issue of photographs, movies etc. being digitalised at some point years ago using some standard of the time, after which the originals were discarded because "there, now it's saved and the old ones are an inferior media anyway".

Then you're left 20 years later with a horribly jpeg'd mess in 800x600 px.

I don't have a source on this, but it's my impression a lot of libraries did this in the 90's or 2000's (if someone knows specific cases i'd love to hear about them, I hope I'm wrong)