John BS @johnabs@qoto.org

@vicgrinberg You can always charge the bards extra, I'm sure it will come in handy for them to get literally everyone off their collective backs 😂

@trinsec Honestly nothing, but they're an (arguably) safe way to make jokes about topics that any particular individual may feel sensitive about if that sort of comment was pointed at them. If someone said that about me, I would be rather upset as I'm currently struggling with my weight at the gym and am self conscious about it, whereas this joke allows the insult to be aimed nowhere in particular (or I guess everywhere..but I didn't mean to insult literally everyone on qoto's mother 😂).

Case in point, many people will take turns trying to come up with the worst burn in the form of "yo mama" jokes as a way to have a competition between wits. Obviously it's easier to deal with such insulting jokes about your mother if the other person has never met her, thus making it a way to give someone the taste of a tounge lashing without the whole mess devolving into actual verbal abuse/bullying (this, of course, changes if the person actually knows your mother and makes it too personal).

In this case it was just the vehicle for the math part of the joke, which I thought was pretty funny.

Oh, and I thought of a math joke:

"Yo mamma's so fat they call her Hilbert because her curves are space filling".

Thank you, I'll be here all week 😂

Today I finally built my first package for gnu guix: zotero! It works now, and I'm quite proud of myself, as it wasn't easy to do :) If anyone is using guix, the link to the build is on guix-science!

@freemo @SteelFolk edit, my apologies, I meant the apparent color in the original comment

@freemo @SteelFolk Right, and looking at this source, I don't see any mention of blue, hence my reservation.

@freemo @SteelFolk Please don't take this the wrong way, but could you source that claim on the hematite's true color? I've looked everywhere and cant find confirmation.

And even if we take that the color is as you say, the likelyhood of growing unadulterated crystalline hematite that would have this color in such a thin film, while adjacent to metals with their own crystal structures that would impact the hematite crystals seems low and doesn't explain the gold/straw color during the hot blueing process either.

@freemo @SteelFolk

1. You do see the multicolor effect in the event the film is not uniformly thick, which is what you can observe in that article on the thermal treatment. However, a uniformly thick film can only reflect a specific wavelength (here's an example for titanium anodizing https://youtu.be/O2RaIJhZ81I?t=755): this is visible from the first part of the article I linked in which they deposited AlTiN on steel and achieved similar coloration to blueing, and similar evolution of the colors based on the films' thicknesses in nanometers. Also note that a large factor in the final color's iridescence is the surface finish: rougher finishes will look less iridescent.

2. [Hematite](https://en.wikipedia.org/wiki/Hematite?useskin=vector) and [magnetite](https://en.wikipedia.org/wiki/Magnetite?useskin=vector) are not blue even in low concentrations or when powdered finely, only black or red, or brown depending on the crystalline structure. If this were the explanation, you would not expect to see gold and "straw" colors appear in the beginning of the hot blueing process, only blues that get progressively darker.

3. The material does not need to be completely transparent, as this layer has to be thinner than the wavelength of light it's reflecting (thus on the nanometer range). Based on the fact that light is wavelike, it can penetrate into thin films of materials that are normally opaque at larger scales. As an example, it occurs on those structural proteins I mentioned which aren't transparent either.

If I'm wrong, I'm pretty sure @SteelFolk can probably correct me, but I'm fairly certain it's the same process as what's going on in the Titanium and Aluminum versions.

Oh, and thanks for the fun discussion, it's been a while since I've been able to talk about this stuff :D

@freemo @SteelFolk If you watch that video, you'll see a different effect than what you're referring to which is apparent from the iridescence of the coating, additionally, the film changes color to gold first, then blue, based on temperature, which is indicative of the thin film effect, as noted here, https://www.tandfonline.com/doi/full/10.1080/00202967.2022.2154495, in the section on Thermal Tinting.

@freemo @SteelFolk Yeah, but my point was that despite the black color of the magnetite, as long as the film is thin enough, the color of the part can be iridescent blue, same thing with other structural colors: proteins that are normally drab brown can still be all sorts of colors as long as you make the light interfere in certain ways, which is neat IMO 😁

@amberxorluci Umm ackshually, by the Pauli-bottom exclusion principle, two bottoms cannot occupy the same space or they end up coercing one to "change spins" and be the top. Clearly this must be the case, or their mutual struggle to be the bottom would result in a similar phenomenon to the following video 🤓😂

https://www.youtube.com/watch?v=M2uRrbxQ1Qs&t=22

@SteelFolk @freemo Thanks for the clarification! I couldn't recall if it was exactly the same thing (magnetite vs standard rust) anymore 😅

I used to do a lot of surface chemistry before a big career switch, so I couldn't recall the exact details, but I was mostly commenting on the structural coloring caused by the technique (thus, the technique's apparent namesake), even though the passivation is the intended application 😁

@freemo Edit, if you're referring to gun metal blueing, we may be talking past each other. The black layer you're referring to is made chemically with etchants rather than via heat accelerated oxidation, which would likely take the process straight to black (or may be a different form of iron oxide than what is created during heat blueing, though I suspect the gun process is named after the heating process).

@freemo No, it's called "blueing" for a reason. The metal passed through multiple colors before eventually reaching one as shown here (I think, I know he showcases it in at least one of his videos) https://www.youtube.com/watch?v=uST7iJgC_gs

It's the same basic principle as titanium anodizing, but the layering is done with iron oxide rather than some alternative, but fine control over metal oxidation through heat or electricity are both possible 😁

@freemo And the color is caused by the thin-film interference effect! A form of structural color that appears not due to pigments or dyes, but due to (Bragg, iirc) refraction! This is the same mechanism that butterflies, tarantulas, and certain birds use, by constructing protein crystals, to color themselves with those particularly striking iridescent colors. Great examples include the blue Morpho, the Ephrbopus cyanognathus, and ruby throated hummingbirds (and opals, but they're just compacted silica spheres, so cool, but not nearly as cool as animals that do this sort of stuff). 😁

So I had a strange dream last night which finally concluded with the main character, a celestial rabbit, who consumed the body of a deceased tortoise monster, "collecting the power of 3000 garden snails" to win a race. I am currently accepting licensing requests, and looking forward to publishing agents contacting me about the heartwarming reimagination of the classic fable, "The Tortoise and the Hare".

Along with the other stories my wife has told me about things I've said in my sleep (such as thanking her for "being the workhorse that delivers all the radars") I am convinced that remembering my dreams and publishing them would be enough to make me wealthy and/or institutionalized 😂

@sambook@mastodon.online @neotoy I don't want to be rude, but why is it unrealistic? Clearly (assuming the photo hasn't been altered or she hasn't had plastic surgery), the body type is real, thus realistic. I understand it's not an achievable body type for many women, but those are two different things. Same basic idea with body builders and normal dudes. It seems like this woman worked quite hard to achieve and maintain this physique (again, assuming it's real), and I (as someone trying to lose weight and build a better body) think that is/can be a very difficult and laudable thing.

So I got a sodastream, and my dog does NOT like the fizzy water. She tried to hit it with her paws after a few sips 😂

@trinsec @freemo I would like to purchase some of this "influence", you two speak of. Does it come with extra perks such as a breakfast buffet, or, perhaps, complementary access to a live audio feed of the servers where qoto is hosted? I think listening to the clicks, boops, and fan whirs would be nice.

From the original toot, it seemed the main objection was that those seeking to gain "influence" have money. Well guess what, I'm poor as dirt cause I'm a grad student, so there gimme some of that influenza 😎 😂