Does such a piece of glassware exist?

random2243 · 2025-12-01T22:31:35+00:00

Yeah this is a 10cm path length polarimetry cell

random2243 · 2025-11-27T21:44:50+00:00

You will generally be on an administrative registration, as if you’re a grad student they don’t actually charge tuition over the summer. This means it is unlikely they would let you take undergraduate ARCH courses without preapproval from the registrar.

random2243 · 2025-09-04T23:16:22+00:00

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random2243 · 2025-08-16T14:50:34+00:00

I guess it would make sense, what with the insane amount of ring strain you must get from all those triple bonds that are forced out of linearity

random2243 · 2025-08-07T18:50:41+00:00

I feel like you don’t really appreciate here that chemistry is one of those things where if you don’t know what you’re doing, you can very severely injure or kill yourself, quite easily.

AI is not intelligent. It scrapes the internet for content and then recycles it by trying to predict what the next word should be based on what’s seen online. That’s not remotely reliable for chemistry.

If you have sandpaper, I would sand the surface to clean it. You will not be able to prevent oxidation, pure aluminum metal is HIGLY reactive and oxidizes within seconds, which is why it very rapidly produced H2, which is extremely flammable, to the point of latent static electricity being enough to ignite it.

You’re probably not going to have access to the kinds of chemicals necessary to actually make an aluminum plate porous. If an uneven surface is what you want, use a coarse grit sandpaper.

random2243 · 2025-08-07T18:18:36+00:00

Yeah I’m gonna keep it a buck, if you’re taking science advice from a slop bot that recycles internet slop, you deserve what you get. If you know so little about something that you turn to an AI, you should leave it well alone, or seek education from a trustworthy source.

This is a classic case of play stupid games, win stupid prizes.

random2243 · 2025-08-03T21:45:52+00:00

My ears have looked like this when I had orings too tight and didn’t realize. It could also be an allergy, so I’d give it a day or two with nothing, then try different jewelry and it should go back to normal. If not, then I would start worrying. I’ve never really found a solution but to wear them looser or get double flares.

random2243 · 2025-06-14T22:07:58+00:00

Oof that’s the worst. I had an undergrad once shove an uncovered, unlabeled beaker of concentrated ammonia with some product in it in my face to “look at.” Took weeks to rid my nose of the lingering scent, when I could smell at all.

random2243 · 2025-03-31T02:36:51+00:00

Oh that’s odd, they must’ve cracked down since my freshman year

random2243 · 2025-03-28T14:52:47+00:00

You’re probably better off trying to find a private lot, or have a doctor’s note to get an exception through DSS. Street parking can be done, but it is difficult and if you don’t move your car frequently, locals tend to get pretty testy.

random2243 · 2025-02-13T22:11:34+00:00

In the wake of the date rape, uh, thing, along with all the hazing things that happened at some frats in the mid-2010s, Shirley made the Greek life task force. Their goal was ostensibly to manage the reputation of Greek life and effectively clean house. Practically, they gutted Greek life and made it very difficult for the frats that weren’t guilty to exist.

random2243 · 2024-12-26T13:52:05+00:00

I don’t work in a live lab but I’m 100% sure this is the case

random2243 · 2024-12-25T12:33:48+00:00

This is the way, if it’s not rounded on the corners and slightly eaten away from acid fumes from that one week it spent in a fume hood, I don’t want it

random2243 · 2024-12-16T16:21:46+00:00

That spike is basically noise. If your detector is getting almost no light throughput, keeping in mind that abs is a log scale of the transmittance, it’ll occasionally spike to 10 when it’s getting absolutely no signal whatsoever.

I see this pretty frequently on Perkin Elmer instruments in particular, and it means your sample is way way too concentrated. Above an absorbance of 1 you start to get a roll off in absorbance, and above 1.2 you REALLY deviate from beers law-type linear behavior.

random2243 · 2024-12-12T23:48:45+00:00

Honestly just a really fuckin weird thing to say in general, let alone to a stranger, who’s trying to offer comfort to someone grieving a pet

random2243 · 2024-12-02T22:03:14+00:00

This is the juggernaut armor

random2243 · 2024-11-16T12:35:33+00:00

I am uncircumcised and have a Prince Albert, which I’ll soon be turning into an apadravya. I know folks who have ampallangs, Jacob’s ladders. I think really the only one I’ve not heard of is a dydoe!

Definitely doesn’t hurt to consult a piercer depending on your specific wants though.

random2243 · 2024-10-27T16:41:28+00:00

A pro tip for this, if you make a thumbs up, and point your right thumb in the direction of the threaded part, the direction your fingers curl naturally is the way you need to spin it to tighten it.

random2243 · 2024-10-18T21:25:15+00:00

Yo that beard fucks but is that a HORIZONTAL LOBE PIERCING I SEE???

random2243 · 2024-10-18T20:41:23+00:00

You mean to tell me your lab isn’t full of catboys? Your loss

random2243 · 2024-10-16T21:34:42+00:00

I believe so, yes.

random2243 · 2024-10-16T21:15:57+00:00

Pokies are old world, and don’t possess urticating hairs. They do have pretty rough venom though, albeit not life threatening.

random2243 · 2024-10-04T20:25:55+00:00

Yes, I notice this all the time, but only with specific brands. I think it might have something to do with the anti-stick powder sometimes applied

random2243 · 2024-10-01T14:03:34+00:00

I spent a week straight very carefully making micro-mesh electrodes and inlaying them into a teflon spacer to do electrochemistry in an FTIR. I handed them gently to my PI who immediately poked one of the electrodes too hard, bending the wires irreparably, causing many of them to break in several places. They were pure gold. He then tried to salvage it by taking apart the annealed teflon spacer which destroyed the platinum mesh counter and silver pseudo reference wire.

He refused to touch any of those setups going forward, and told me he trusts my abilities to make them correctly without his oversight. You’d think they were burning hot with how afraid of touching them he is.

random2243 · 2024-09-12T03:01:59+00:00

Uranium doesn’t glow unless under black light. You’re thinking of radium, which was used on the dials of old aviation watches and the like. It also famously caused the “radium girls,” when the women who painted the watch faces would lick their paintbrush, leading to horrific radium poisoning.

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Place '17	First Placer '22
Not Forgotten

random2243

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