ornery_chemist
@ornery_chemist@mander.xyz
- Comment on What strategy would you use to estimate the number of hazelnuts 1 week ago:
Roughly a truncated cone with diameters ~7 nuts and ~9 nuts, and the cup is ~12 nuts high (quite hard to tell due perspective and nits of different sizes). Throw in an extra layer to account for the heap at the top (which is a dome, but the dome is taller than 1 hazelnut, so treating it as a shorter layer should give some error cancellation) to give a height of 13. The volume using the formula for a truncated cone of those dimensions is ~657 cubic hazelnut diameters. Random sphere packing is 64% (though wall effects should decrease this number) giving a total of 420 nuts (nice).
Answer
This ends up being about 5% lower than the true answer. I’m surprised it’s that close. The underestimate makes sense given the wall effects I mentioned, but the error bars on my eyeballed measurements are surely higher.
- Comment on YOLO 2 weeks ago:
What’s the point of math if you can’t verify it empirically?
- Comment on 🤡 We've all been played for fools. 🤡 2 weeks ago:
Ah shit are you me a few years in the future? Currently in the corporate phase, only, instead of my PhD convincing people that I know what I’m talking about, I get told to pound sand and, for everything I do, every slight change I make, consult our minored-in-chemistry EHS focal points whose only hands-on lab experience is neutralizing bicarb with food-grade acetic acid solutions inside a molded clay vessel.
- Comment on YAYAYA CONGRATS!!!! 2 weeks ago:
The woman is covered in 3 different kinds of power series that certain kinds of scientists (presumably personified here by the man) love to swap in for more complicated terms by waving their hands and chanting “first order”. Truncated series give fugly equations a more tractable form by applying certain assumptions (e.g., x is very small, x is very large, or x is fuck-it-we-ball).
- Comment on gotta blast! 2 weeks ago:
The current administration has removed all genders from science, so quantum tense verb stems are now uninflected, sorry.
- Comment on Zotero is still better. 3 weeks ago:
Meanwhile, my advisor: you will buy endnote and you will like it because that’s what I use.
- Comment on why can't you be more like him 4 weeks ago:
OSHA
- Comment on Hope you like math 5 weeks ago:
Nah, just look at the folks over in HR. Irrational fucks to a person.
- Comment on if H₂O is so great why isn’t there H₂O₂ 1 month ago:
catalase
- Comment on salty child 1 month ago:
You’re missing the fuckton of heat that is generated during neutralization. I’ve had a few lab volcanoes because of it (LOC due to the low-boiling organics flashing boiling).
- Comment on It’s the little things 1 month ago:
Yes and no. No surface tension implies vanishing intermolecular forces, so the liquid would not be cohesive and would expand in all directions to the volume of the room… which is pretty much the definition of a gas. Not quite though: supercritical fluids also do this as long as temperature and pressure remain high enough, and are indeed useful in niche applications industrially.
- Comment on y tho 2 months ago:
Those flasks can actually be really nice compared to normal RBFs for real reasons and not just memes. They are a lot easier to e.g. pipette out of because the taper gives small volumes of liquid more height than a typical round bottom, so less material is lost as skin on the glass. “Just use a smaller container”, you say, and yes, do so if you start with a small volume. But a lot of times in organic chemistry, you need to isolate the compound from solution by evaporating the solvent. Depending on the concentration, the volume can start large and end much smaller. These flasks can help recover a larger amount of precious material.
- Comment on Can anyone do the maths? 2 months ago:
Just think about all the shit you had to do to get from then to now, and then imagine that you have to do all of it all over again.
- Comment on When you work for a company owned by a A..hole 2 months ago:
Pretty sure I just got ~anti-bribery~ ethics and compliance training that said no one in my company is allowed to accept such gifts lol
- Comment on Wheee 2 months ago:
Completely rewrite the curriculum and problem sets for my advisor’s grad-level course for flipped-classroom virtual teaching as opposed to in-person lectures. It was the pits for many reasons, not the least of which was that his attitude became “everyone is at home doing nothing, so I can ramble into a recording for 3 h instead of giving 1 h lectures and we can have a full problem set every week instead of 4 in a semester and the scheduled class time is now a problem session amd to answer students’ questions :)”.
And a fuckton of DFT calculations, so honestly, fair.
- Comment on Wheee 2 months ago:
And calculating far too many digits of π
- Comment on Let's gooooooooo! 2 months ago:
-onium is usually an extra group/proton (carbonium, oxonium, bromonium…). HO+ isn’t too hard to approximate–just take a hydroperoxide or peroxyacid and add strong acid :)
- Comment on Let's gooooooooo! 2 months ago:
Hydroxyl hydride feels wrong given that hydride is H-. So what’s a good name for HO+…? Oxenium hydride? Hydrenium hydride? (comparing carbonium (CR4H+) vs carbenium (CR3+))
- Comment on Let's gooooooooo! 2 months ago:
I think oxenium hydride would be more appropriate than hydroxyl taking into account the polarity of the two fragments (HO+ and H-), though AFAIK there is no standardized name for HO+.
- Comment on when you work in an interdisciplinary institution: 2 months ago:
Computer scientists? Sure, maybe. But all four of us will join together to resent the engineers for designing systems around extrapolated power law fits and lack of rigor (and totally not because they are higher paid or anything).
- Comment on Dots! 2 months ago:
Some Pu solutions for your viewing pleasure:
- Comment on Dots! 2 months ago:
just take a cheese grater to it to make smaller pieces smh
- Comment on Mood. 2 months ago:
Not when your advisor converts it back to docx before sending you comments.
- Comment on But I am mighty!! 2 months ago:
I’m not sure I’d call US sunscreens way worse (they are still very effective at blocking UVB, just not UVA as effectively), but there are definitely better options abroad. There definitely aren’t many options; that’s part of why Hawaii banning two common sunscreen ingredients for marine toxicity reasons was such a big deal.
- Comment on Add it to the pile of reasons to hate 'em 2 months ago:
Back on my did there was an element called unununium until some
nuclear scientistsbismuth-munching paper-pushers with nickel allergies decided in 2004 that they liked Röntgen more than Regirock. - Comment on SUNS OUT GUNS OUT 3 months ago:
I don’t know much about this, but I can’t help but think that “complete” and “consistent” are doing a lot more work in that sentence than my current understanding of the terms would lead me to believe.
- Comment on Why 3 months ago:
For those who did a search only to get back pages of less-than-useless SEO slop that just recites the number line, here is something that better describes some of the grammatical insanity.
also, czterydzieści cztery is imo one of the less pronounceable words (well, two of them) in Polish.
- Comment on Don't ask for more pixels 3 months ago:
Sure, there may be a maximal element, but not necessarily a maximum (there might be multiple people of equal and maximal gayness, not just one person).
Also, not relevent to the logic here per se, but last time this went around the conclusion was that a spectrum implies a total order, not just partial.
- Comment on (・・;φ 3 months ago:
I know that this is partially a joke, but I was trying to figure out what kind of lab would be done to produce chloroform that would be appropriate for students (recent OSHA crackdown on chloromethanes notwithstanding)… haloform reaction I suppose? Is that a common teaching lab experiment?
- Comment on Marshmallow Test 3 months ago:
My mom took my little brother to participate in a child psych study like this when he was a toddler (mom had some ties to the university). It was a very similar experiment with skittles as the prize. My brother sat staring glumly at the candy the whole time. The test administrator was increasingly enthusastic with praise after each round right up until the end when she congratulated him and said that he could have the whole bag. He said “no thanks” and ran back to mom crying because he was told there would be candy but they only had skittles, which he very much did not like (and for that matter still doesn’t). The administrator was apparently embarrassed and told my mom that she thought that all kids liked skittles…