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Cake day: June 29th, 2023

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  • Yeah. The magnet quench flash boils a bunch of helium which is itself expensive, and presents a nice asphyxiation hazard as well. And then, assuming the quench damaged nothing, you have to set up the magnet again by getting the coils back down to superconducting temperatures… to get there, you end up boiling off a lot more helium. And then you have have to bring an engineer in to get the electrons spinning through the coil again and wait for the wobbles in the current to stabilize.

    Or so I think. I work with NMR spectrometers and not MRIs, but it’s essentially the same technology.









  • Nah, reach is a huge advantage. I’m not sure how rapier fencing differs from regulation sabre/epée/foil, but here’s my 2 cents from that perspective:

    Smaller people are not, as a rule, substantially quicker than larger. If you see any difference in your experience, it’s likely a selection bias (shorter people have to be quicker to compete at the same level). The shorter person must enter the strike range of the taller person before the taller person comes within theirs and must be significantly quicker or more skilled to overcome that dead space. If the taller person can maintain a proper distance, gg. Taller people can also lunge farther, giving a wider active range.

    Targeting is a smaller issue than you make it out to be; footwork and maintaining balance, which reposition the core, are at least as important as leaning to dodge, and advantage the taller person (longer legs = more movement range). If the taller person is coming from above as you say, they can just continue their slash (sabre) downward toward that less mobile core, or squat a bit deeper if the arc won’t reach. If instead you were referring to a poke, they’re either already targeting the torso anyway (foil) or whatever body part is most easily reachable (epée; still often torso, but cheeky wrist/arm strikes can be something of an equalizer here), and anyway they are already striking at a range that the shorter person cannot, making a successful counterattack more difficult.

    Besides reach, a height difference is brutal when it comes to sabre fencing; the shorter person is restricted to targeting arms and torso (can’t reach the head easily), so the taller person can anticipate strikes from fewer angles. The taller person can come from any direction and has gravity on their side for own overhead strikes. Those suck to defend against.


  • Good article, reactive web design notwithstanding (stop. breaking. my. scrolling). I’m not surprised that obtaining the chemicals was that easy, even accounting for the mislabeling and fake products. A lot of these chemicals are pretty simple and have pretty general use cases in the fine chemicals space. Hell, I had occasion to use (2-bromoethyl)benzene, aniline, and propionyl chlorde in school for making random precursors and ligands, albeit separately. I wonder if they are at all harder to procure nowadays because of the fentanyl epidemic.

    Edit: checked some of my old work, didn’t actually use (2-bromoethyl)benzene but did make a related compound as an intermediate for ligand synthesis using a very satisfying Appel reaction.





  • I went up to the Lake Champlain area where there was some high altitude cloud cover. Fortunately, it didn’t affect the viewing basically at all. A cool side effect of the clouds/related atmospheric conditions though was that the sun had a 22° halo. I wish that 1) I’d had a camera that could capture it and that 2) I’d had the presence of mind to pay attention to what happened to it in the moments before and after totality.




  • ornery_chemist@mander.xyztoxkcd@lemmy.worldxkcd #2907: Schwa
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    7 months ago

    The point about stress is interesting. I’ve been playing with pronouncing the phrase, and almost everything tends toward [ɐ] when I speak the syllables one at a time, even the ones I marked with and pronounce as a schwa in normal speech. The notable exceptions are the final schwas in “obstruction” and “onions”, which tend toward [ɪ], and the -nel of “tunnel”, which is something like [nɫ] (vocalic ɫ) ~ [nəɫ].


  • ornery_chemist@mander.xyztoxkcd@lemmy.worldxkcd #2907: Schwa
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    7 months ago

    It helps when most of the vowels are the same and most other letters match their English counterparts lol.

    In case you get the urge to learn sooner:

    Here are some quick refs for consonants and vowels in English (RP = received pronunciation (a standardized form of English from the UK), GA = General American). Wikipedia pages for specific English dialects (e.g., Australian English) also contain a bunch of word/IPA pairs. Here are audio charts for vowels and consonants.



  • ornery_chemist@mander.xyztoxkcd@lemmy.worldxkcd #2907: Schwa
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    7 months ago

    Thank you for reminding me of this channel, I’d forgotten about it.

    Interesting about the merging. Schwa has always been weird for me because in my dialect it can be many sounds. I grew up saying “obstruction” as [ʌbstɹʌkʃɪn] like those around me. Then I hit grade school and was told by a straight-faced teacher that both the first and last syllables in this and similar words were schwas while pronouncing them differently :)