Preety pictures: OC edition

Preety pictures: OC edition

Freshly recrystallized benzoic acid

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While we're on the theme of recrystallization, here's some sulfur

These are neat. How do you crystallise them? I would think for sulfur you'd just subject it to pressure but then you'd get more of a flat disk rather than those spikes you have?

Well with the benzoic acid I used water and for the sulfur I used toluene (but xylenes would also work)

A macro shot of recrystallized acetylsalicylic acid

So is the sulfur reacting with the toluene to form a new compound then? Is it ionic?

sulfur dissolves in toluene

Actually the point of recrystallization is that it dissolves in a liquid when it's hot, but when it's cold it "drops" out of solution as needle like crystals. Doug's lab has a great video about it! youtube.com/watch?v=lmFga5kwNZg

Thanks, senpai.

A little bit of DIY chemistry:
Seperation of the aqueous and organic layer (which had mostly mixed mono-nitro toluenes in it)

crystallization in orgo lab was fun the one time I got actual yield

cool i watch dougslab too

>crystallization in orgo lab
or should i say 'how to flush your product down the toilet 101'

is that drugs?

Sone preety KMnO4 crystals

...

Are those mushrooms?

is it bad that i want to sniff those things? they look tasty.

Well it has an LD of around 1g/1kg of body weight so i guess you could get away with snorting up a few lines haha

You could, but every time you sneeze for the next decade you'll leave a bright pink mist in the air.

>(which had mostly mixed mono-nitro toluenes in it)
How were you limiting the nitro addition if you don't mind me asking? I always though that adding nitrate salts or nitric acid pretty much just turned toluene into TNT relatively quickly.

No, not at all. To make TNT one has to have very harsh conditions (eg heating, fuming nitric acid, multiple addition steps, etc.). And I tried to limit it just to mono by having the temperature always below 15*C

Not OC, but it's still very pretty
Neodymium Sulfate crystals

In Russia we have that in free trade.

how do you make magnets out of them?

yeah, but I've yet to identify them

ok i think it is "polyporus (piptoporus) betulinus" or birch bracket

They look like feral marshmellows.

Kay, mang.

Are they anything special? Can one eat them?

Bump

Another picture of benzoic acid. Wierdly, it didn't form needle like crystals but rather shapes like a typical snowflake. The only thing that changed was that I did it in a wine glass. Will do more reserch on how the shape of the container affects the shape of the crystals.

Silver staining. Guess the yeast

>what is [math]C_{2} h[/math]: the post

What is it indeed?

Individual cells of an onion peel

Wow. I hope you guys die from this.

ITT op's meth lab

cross-section of silicon (SEM).

SEM picture of a fatigue failure on a steel pedal

Same pedal, but brittle part of the failure IIRC

Sexy, more material failure?

I only got a few of them, checking my assignment folder.
Got some pretty aesthetic insect SEM OC too :)

Fly leg SEM

Fly wing SEM :)

Here you go

Last material failure one :(

Vicker's crack on a random ceramic :)

This image is not a brittle fracture surface it is ductile failure indicated by the micropores

This image shows a typical cleavage fracture surface and no indication of fatigue failure

>No scale bars

Bump

Something old, like 6 years old

>brittle part
>showing the part with pores
>fatique failure
>not showing an area with the characteristc lines

Are you sure about what you wrote?

>magnets

"Neodymium" magnets, oddly enough, are mostly iron. The common formula is [math]NdFe_{14}B_{2}[/math].

>Sintered Nd-magnets are prepared by the raw materials being melted in a furnace, cast into a mold and cooled to form ingots. The ingots are pulverized and milled; the powder is then sintered into dense blocks. The blocks are then heat-treated, cut to shape, surface treated and magnetized.

Are engineers welcome here too?

Paper from ~18 month ago, done in group of 4, and I wasn't the one talking about the failure. Plus the fact idgaf about failure mechanics, tadaa :)

nerd

OC Fractals also allowed?

>Fractals
OP here; They look amazing! How did you make them?

in mandelbrot you dummy

Zn-Al die cast alloy microstructure. Ignore the labeling, it's a bit dumb.

There's some micropores due to shrinkage maybe, as well as a scratch cause I didn't polish it perfectly. You can also see the individual grains and contrast between phases.

Here's a piece of steel (left) covered with paint (middle) set in bakelite (right)

Here's a Zootoca vivipara, or common lizard. Took this last week-ish.

Here's a robin.

Not OC: Crystals of antimony trichloride left in a flask after a Swarts reaction

wicked bong

Fuck me those are some good recrysts, 10/10

lysozyme crystals

These are so pretty! How did you get them? Did you extract them?

orthorhombic structure is beautiful

I forget what it is, was some time ago

Actually I wrote my own renderer!

With my own renderer! That one is a transformed Menger Sponge. Here's another

Another one

And another

And ofcours the normal Menger Sponge

Transformed to shit, was made to test shadows

Good shit user.
Is your render software available?

More than just available! You can render them yourself within your internet browser! shadertoy.com/view/lttGzr

C. ablicans?

Oh boy, thats really fucking neat, thanks.
Bookmarked it. Will probably spend half the night dicking around with it, kek

I suggest changing only the following variables :

CameraPosition (Camera will automatically look at the origin)
Scale (Relative scale of the fractal on every iteration)
Iterations (not too high or you'll crash)
Offset (Scaling transformation)
m (Rotation transformation matrix)

Oh and almost forgot! Also change the variables Aperture & Focal Distance for correct Depth of Field!

Alright, will keep that in mind. Thanks my man, thats really high quality OC contribution