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Rachel Barker

@rachelplusplus.me.uk

Computing environmentalist, amateur musician, general-purpose nerd. Previously worked on AV1+AV2 @ Google, now consulting @ Monocot. She/her. Blogs at https://www.rachelplusplus.me.uk/

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17.02.2025
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Latest posts by Rachel Barker @rachelplusplus.me.uk

That's neat! Where did you find the picture?

08.03.2026 05:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
A rocky barren surface of an asteroid with the darkness of space behind it and faint white stars speckling the background.

A rocky barren surface of an asteroid with the darkness of space behind it and faint white stars speckling the background.

no, this isn’t the bottom of the ocean. it’s the surface of an ASTEROID.

IN SPACE.

08.03.2026 01:32 πŸ‘ 223 πŸ” 27 πŸ’¬ 6 πŸ“Œ 3
Screenshot from "retrocatalog.com", showing its size comparison tool, which gives you the option of comparing the size of a handheld console against a variety of objects, including an egg, credit card, playing card, kerrygold butter, soda can, banana, and a size 7 basketball.

Screenshot from "retrocatalog.com", showing its size comparison tool, which gives you the option of comparing the size of a handheld console against a variety of objects, including an egg, credit card, playing card, kerrygold butter, soda can, banana, and a size 7 basketball.

An incredibly useful feature with an absolutely unhinged list of objects.

02.03.2026 15:13 πŸ‘ 24 πŸ” 2 πŸ’¬ 3 πŸ“Œ 0
My photo shows the front of a warm-yellow coloured Minoan clay flask, hand painted in black with a frontally depicted octopus. The flask measures 27 cm (about 10.5 inches) in height. It has a short spout at the top with a small loop handle at either side. The octopus is swimming diagonally with its eight writhing, sucker-lined arms covering the whole surface of the flask. It stares out at the viewer with wide, almost cartoon-like eyes. Additional motifs include sea urchins, tritons, small rocks and seaweed. Minoan decoration depicting sea motifs is known by scholars as the β€˜Marine Style’. The flask was excavated in 1903 at a Bronze Age settlement site at Palaikastro. The Palaikastro excavations, carried out between 1902 and 1906, were run by R. Bosanquet and R.M. Dawkins from the British School of Athens. The flask is part of the collections at Heraklion Archaeological Museum, Heraklion, Crete.

My photo shows the front of a warm-yellow coloured Minoan clay flask, hand painted in black with a frontally depicted octopus. The flask measures 27 cm (about 10.5 inches) in height. It has a short spout at the top with a small loop handle at either side. The octopus is swimming diagonally with its eight writhing, sucker-lined arms covering the whole surface of the flask. It stares out at the viewer with wide, almost cartoon-like eyes. Additional motifs include sea urchins, tritons, small rocks and seaweed. Minoan decoration depicting sea motifs is known by scholars as the β€˜Marine Style’. The flask was excavated in 1903 at a Bronze Age settlement site at Palaikastro. The Palaikastro excavations, carried out between 1902 and 1906, were run by R. Bosanquet and R.M. Dawkins from the British School of Athens. The flask is part of the collections at Heraklion Archaeological Museum, Heraklion, Crete.

Marvellous 3,500 year-old Minoan clay flask decorated with a wide-eyed octopus πŸ™β€οΈ

Excavated in 1903 from a Bronze Age settlement site at Palaikastro, Crete.

Heraklion Archaeological Museum πŸ“· by me

#Archaeology

28.02.2026 13:49 πŸ‘ 968 πŸ” 232 πŸ’¬ 20 πŸ“Œ 19

For no good reason, I made my own concurrent queue in Rust using a mutex and a condvar, and used it instead of an mpsc channel. Once I got it to compile, it worked first try. I think I love Rust.

27.02.2026 04:47 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Robot Unicorn Attack "Always" by Erasure All-Vocal Cover by Elizabeth Zharoff
Robot Unicorn Attack "Always" by Erasure All-Vocal Cover by Elizabeth Zharoff YouTube video by The Charismatic Voice

My favourite cover, in terms of sheer *vibes*: www.youtube.com/watch?v=z06P...

26.02.2026 23:56 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Post image

i love how when I decided that I wanted to Write Some Real Open Source Code in 2018 I thought "I need a new github avatar to communicate that i am a serious person" and made this

i 100% stand by it great job past self

22.02.2026 15:39 πŸ‘ 220 πŸ” 10 πŸ’¬ 4 πŸ“Œ 0
Video thumbnail

Not sure what phase of my life I’m in, but here’s that modelling balloon icosidodecahedron nobody asked for!

In theory it could be made out of a single modelling balloon, although in reality they don’t make balloons long enough :(

22.02.2026 17:25 πŸ‘ 41 πŸ” 5 πŸ’¬ 0 πŸ“Œ 2

lmao

21.02.2026 14:48 πŸ‘ 20 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Preview
Package managers keep using git as a database, it never works out Git repositories seem like an elegant solution for package registry data. Pull requests for governance, version history for free, distributed by design. But as registries grow, the cracks appear.

Reading this article again while waiting for Cargo to download its index nesbitt.io/2025/12/24/p...

21.02.2026 02:29 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Defer available in gcc and clang About a year ago I posted about defer and that it would be available for everyone using gcc and/or clang soon. So it is probably time for an update. Two things have happened in the mean time: A tec…

I'm so happy to see C continuing to add new quality-of-life features, and standardizing compiler extensions which were previously available but only inconsistently so:

gustedt.wordpress.com/2026/02/15/d...

(not my blog, but the author doesn't seem to have a bsky account)

20.02.2026 16:45 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
The planet Uranus appears as a smooth, bright cyan disc at the center, its atmosphere reveals soft, hazy tones of blue. Surrounding the planet is a vivid reddish glow, forming a diffuse halo that contrasts strongly with the cool blue of the planetary disc. Encircling Uranus are several thin, concentric rings, visible as pale grey arcs. Subtle variations in brightness can be seen across the planet\u2019s face, with slightly brighter patches near the limb, hinting at atmospheric structure.

The planet Uranus appears as a smooth, bright cyan disc at the center, its atmosphere reveals soft, hazy tones of blue. Surrounding the planet is a vivid reddish glow, forming a diffuse halo that contrasts strongly with the cool blue of the planetary disc. Encircling Uranus are several thin, concentric rings, visible as pale grey arcs. Subtle variations in brightness can be seen across the planet\u2019s face, with slightly brighter patches near the limb, hinting at atmospheric structure.

WE HAVE THE FIRST VERTICAL VIEW OF URANUS’S IONOSPHERE FROM JWST!!!! LOOK AT THOSE AURORAS!!

19.02.2026 20:21 πŸ‘ 146 πŸ” 26 πŸ’¬ 2 πŸ“Œ 3

Thinking more about when you'd use arm-none, that includes things like OS kernels, where you might want loadable modules compiled with mixes of gcc, clang, rust, etc.

I guess that means in that situation you either have to pick a more constrained ABI, or be really, *really* careful about types

16.02.2026 00:38 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

oh, true! I guess that's their justification for not caring about a fixed ABI. But that's still so jank.

16.02.2026 00:30 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Welp, guess that means any shared library which wants a consistent ABI needs to explicitly specify the underlying type of every externally-visible enum. Which there was no standardized way to do until C23. Fun times!

(it is doable pre-C23, just less pleasant)

16.02.2026 00:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

A friend was having problems with [repr(C)] enum ErrorKind { ErrorNone=0, ErrorTrap=1, ErrorLinker=2, ... } being 8bit in arm-none Rust and 32bit in C. I spent like an hour digging into why Rust would have the wrong C enum size for arm-none.

Turns out Rust matches gcc, but gcc doesn't match clang πŸ’€

15.02.2026 22:12 πŸ‘ 3 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
I did an image of Jupiter using these same filters. Here is Saturn for comparison. They are... different. Check out the Jupiter version here: flic.kr/p/236XVjE

This image represents Saturn as it appeared on 2018-06-07 at 00:06 UTC.

Red: WFC3/UVIS F343N (idg242qlq)
Green: WFC3/UVIS F275W (idg242qkq)
Blue: WFC3/UVIS F225W (idg242qmq)

I did an image of Jupiter using these same filters. Here is Saturn for comparison. They are... different. Check out the Jupiter version here: flic.kr/p/236XVjE This image represents Saturn as it appeared on 2018-06-07 at 00:06 UTC. Red: WFC3/UVIS F343N (idg242qlq) Green: WFC3/UVIS F275W (idg242qkq) Blue: WFC3/UVIS F225W (idg242qmq)

Saturn in Near UV and Blue - From Judy Schmidt (geckzilla.bsky.social) - https://flic.kr/p/2fMx5oT

13.02.2026 21:00 πŸ‘ 177 πŸ” 37 πŸ’¬ 1 πŸ“Œ 3
A medieval illustration of a hedgehog with grapes skewered on its spines

A medieval illustration of a hedgehog with grapes skewered on its spines

It was believed in medieval times that hedgehogs had spikes so they could roll over fruit to carry home to their children, which is not true but is a really cute idea

13.02.2026 11:26 πŸ‘ 7326 πŸ” 1726 πŸ’¬ 70 πŸ“Œ 109

Tell you what else though, it's amazing how much of the spam you get for running a business is people trying to sell you ways to spam everyone else, like some kind of spam ouroboros.

09.02.2026 22:05 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

For bonus fun, you know how it's mandatory to include an unsubscribe link in marketing emails in many countries?

Usually I expect those to be fake, but this one is even more fake than most! It's the bare minimum to display as a link, without actually going anywhere:

<a href="#">Unsubscribe</a>

09.02.2026 22:01 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Today in weird marketing spam: Some kind of "AI marketing" service from a company called... okay, it's spelt differently, but the name reads as "enema".

Which I can only take as an indication of the kind of end result you can expect from using their product...

09.02.2026 22:01 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
toast napping on top of a radiator cover

toast napping on top of a radiator cover

08.02.2026 23:23 πŸ‘ 69 πŸ” 17 πŸ’¬ 1 πŸ“Œ 0
A yellow "caution wet floor" standee. The bottom is flared so it looks like a banana peel.

A yellow "caution wet floor" standee. The bottom is flared so it looks like a banana peel.

Standee, deployed

Standee, deployed

This object is a legitimate masterpiece of design

08.02.2026 19:32 πŸ‘ 5293 πŸ” 1147 πŸ’¬ 33 πŸ“Œ 22

Old consoles couldn't play pre-rendered music or effects. Instead, games had to use a synthesizer built into the console.

By isolating each synth channel in turn, you can separate out the melody, bassline, countermelodies, chords, etc. and show how they come together to form a full track.

02.02.2026 23:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Mystic Cave Zone - Sonic the Hedgehog 2 [OST]
Mystic Cave Zone - Sonic the Hedgehog 2 [OST] YouTube video by DeoxysPrime

Today I'm listening to: Mystic Cave Zone from Sonic 2, and a deconstruction of it by carpathia808 on youtube.

Original: www.youtube.com/watch?v=HdgR...

Deconstruction: www.youtube.com/watch?v=jhge...

02.02.2026 23:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
A wide field of view showing deep space, dotted with many small galaxies and a few foreground stars that display six diffraction spikes. One galaxy is highlighted with a magnified image in a graphic pull-out box in the lower right corner. The galaxy is labeled MoM-z14 and appears as a blurry yellow blob with a small red area at its top.\n\nImage credit: NASA, ESA, CSA, STScI, Rohan Naidu (MIT); Image Processing: Joseph DePasquale (STScI)

A wide field of view showing deep space, dotted with many small galaxies and a few foreground stars that display six diffraction spikes. One galaxy is highlighted with a magnified image in a graphic pull-out box in the lower right corner. The galaxy is labeled MoM-z14 and appears as a blurry yellow blob with a small red area at its top.\n\nImage credit: NASA, ESA, CSA, STScI, Rohan Naidu (MIT); Image Processing: Joseph DePasquale (STScI)

the little yellow blob highlighted in this image is currently the FARTHEST galaxy we’ve ever seen.

this galaxy existed only 280 MILLION years after the big bang!!

30.01.2026 03:23 πŸ‘ 110 πŸ” 22 πŸ’¬ 5 πŸ“Œ 0

Primarily looking for remote work, but would consider in-person in the UK if the circumstances are right.

Available for either contract work through the company I run (easiest route if you're outside the UK), or direct employment.

27.01.2026 14:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Putting out a call: I'm looking for work.

Senior software developer, specializing in low-level, embedded, and systems programming. Previous work includes video compression (developer on AV1 and AV2), silicon verification, and scientific/numerical software. Full CV/resume available on request.

27.01.2026 14:24 πŸ‘ 8 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
β™« Kraftwerk - Kraftwerk ❝1❞ (Full Album)
β™« Kraftwerk - Kraftwerk ❝1❞ (Full Album) YouTube video by Ultra Full Albuns

What I listened to today: "Kraftwerk"

Did you know before Kraftwerk standardized on the genre-defining all-electronics sound you know them for, they were a prog-music jam band? And they were *really good* at it? Check out their first album, it's not what you expect:

www.youtube.com/watch?v=LJka...

26.01.2026 20:02 πŸ‘ 16 πŸ” 3 πŸ’¬ 1 πŸ“Œ 2

Arbitrary milestone get: Today I reached 100 million points on Folding@Home!

23.01.2026 08:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0